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      09-07-2011, 01:28 PM   #243
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yo quiero 295s in the rear for the summer



The gauge pod came in today, but I gotta take half the interior apart to install it. So no rush...
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      09-13-2011, 05:39 PM   #244
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updates please????

whats going on?? all going well ill be at the dyno friday........ im going for the vt2 power record... lol weather is chiiilllyyy as well so things should be going really well....... just praying work is cool for me to get the day out :-(

kw clubsports coming soon, Plus a nice weight drop with some tillet Carbon race seats, like 9lbs each seat..........
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      09-13-2011, 11:13 PM   #245
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Its at the shop getting water/meth installed, and the boost leak investigated. So far a small leak has been fixed, and the guy thinks he sees another suspicious location. Should be done by friday
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      09-14-2011, 02:40 AM   #246
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Awesome,, then you'll be able to record some times to us very soon, Haha :-)
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      09-14-2011, 10:07 AM   #247
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yeah I feel like I jerk for primising them so much, but there's no point of doing that until the car's running 100%
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      09-14-2011, 03:39 PM   #248
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Quote:
Originally Posted by Roffle Waffle View Post
Its at the shop getting water/meth installed, and the boost leak investigated. So far a small leak has been fixed, and the guy thinks he sees another suspicious location. Should be done by friday
What's the situation with water/meth? Are you going to adjust the ESS tune at all? You're not worried about losing ESS warranty so early in your install?

I am so intensely tempted by water/meth, and eventually will go there after the standard kit is operating perfectly for a while. Free power, consistency, and motor safety!
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      09-14-2011, 03:55 PM   #249
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Originally Posted by iPhoneEngineer View Post
What's the situation with water/meth? Are you going to adjust the ESS tune at all? You're not worried about losing ESS warranty so early in your install?

I am so intensely tempted by water/meth, and eventually will go there after the standard kit is operating perfectly for a while. Free power, consistency, and motor safety!
their are some imo considerable downsides to meth/water injection......... pleasure always comes with pain....... unfortunatly...
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      09-14-2011, 04:01 PM   #250
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With a proper install, I don't see any big downsides to water/meth install. My shop talked to ESS about it, and they said many cars with this kit run water/meth and that it doesn't need a special tune for it since the computer will adapt. I'm going to ignore the fact that fr8dog lost a lot of power up top with his install because it was very cold when he did it and I don't know if his ECU had time to adjust.

I should have the car back by the weekend with the kit installed, plus running 1-2 more psi with my leak hopefully fixed. Then I'll drive the balls out of it for 300 miles for it to adapt, and hit the dyno. If it'll need tuning, I'll take the appropriate steps
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      09-16-2011, 11:07 PM   #251
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The leak seems fixed. I didn't hit 8psi (10psi on peak recall) every time I ran out 2nd gear, but it was dark and I only tried 3x. I did hit 10.5psi on overrev once, so it definitely hit true 8psi. I just gotta figure out where my shift point is. Redline is supposed to be 8200, but it seems to really pull timing if you go that high. Optimal shift point is probably 8000rpm, BUT now that the leak is fixed, the rpm needle accelerates towards idle much faster than before in the first 2 gears. I also smelled clutch on the dyno last time....

I updated the first post with more info. Meth kit is installed except the nozzle, we're waiting for a custom bung to arrive monday night. Don't want to half ass that part since its very important to get a good seal on the soft aluminum pipe
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      09-17-2011, 06:23 AM   #252
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Quote:
Originally Posted by Roffle Waffle View Post
The leak seems fixed. I didn't hit 8psi (10psi on peak recall) every time I ran out 2nd gear, but it was dark and I only tried 3x. I did hit 10.5psi on overrev once, so it definitely hit true 8psi. I just gotta figure out where my shift point is. Redline is supposed to be 8200, but it seems to really pull timing if you go that high. Optimal shift point is probably 8000rpm, BUT now that the leak is fixed, the rpm needle accelerates towards idle much faster than before in the first 2 gears. I also smelled clutch on the dyno last time....

I updated the first post with more info. Meth kit is installed except the nozzle, we're waiting for a custom bung to arrive monday night. Don't want to half ass that part since its very important to get a good seal on the soft aluminum pipe
stock clutch seems to be amazingly well i think :-) still the stage 1 HPF cars can run stock clutch and they have much more tq,, tq is what kills a clutch, well that and drag runs!!! glad your little boost leak is sorted!!!
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      09-17-2011, 01:18 PM   #253
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Quote:
Originally Posted by Roffle Waffle View Post
yeah I feel like I jerk for primising them so much, but there's no point of doing that until the car's running 100%
100% agree with you.... its pretty clear when this car is running right, from my experience we ALL need to junk the ESS supplied clips and get some proper tension type clips that dont loosen with heat cycles, this will be my next job i think.......

went out for a good run today when i got home i noticed the i/c was steaming , the air was damp and thick, the inlet side was WARM, outlet coolish.... id like to get someone to build me a custom HUGE frontmount, the ess one is large but i think we could do better, interestly the vt2-550 spec unit is larger than the vt2-500 unit......

meth injection will end your issues, just get a REALLY small nozzle, id set it to come on @ 2psi, an AFR gauge with meth is essential as you want to see how much this is richeing our tune...... would be nice if ess offered us an updated tune like they reguarly do for the m3 kits, i think im going to do some data logs and get them over to ess to see if we can tweak the tune alittle, a mid to high 11 tune all the way through the power band would be lovely... then meth/water would take this down to a low 11, prettty much what the tune does now. if youve had the chance to take this thing out in really cool weather, its a freaking beast.....
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      09-17-2011, 01:21 PM   #254
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Quote:
Originally Posted by Beedub View Post
stock clutch seems to be amazingly well i think :-) still the stage 1 HPF cars can run stock clutch and they have much more tq,, tq is what kills a clutch, well that and drag runs!!! glad your little boost leak is sorted!!!
In comparing to the HPF cars, keep in mind that our Z4Ms don't have the same 6-speed that is used behind the S54 in the E46 M3. Out transmission is the same as is used in the E46 330s (ZHP and later 6-speed 330s).

That being said, most people who supercharge the E46 330 also find that the clutch held up pretty well. I'm new to the Z4M world, but I suspect the VT2-500 kit is making more torque that the forced induction kits produce on the 330.
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      09-17-2011, 02:24 PM   #255
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Quote:
Originally Posted by DanFromTucson View Post
In comparing to the HPF cars, keep in mind that our Z4Ms don't have the same 6-speed that is used behind the S54 in the E46 M3. Out transmission is the same as is used in the E46 330s (ZHP and later 6-speed 330s).

That being said, most people who supercharge the E46 330 also find that the clutch held up pretty well. I'm new to the Z4M world, but I suspect the VT2-500 kit is making more torque that the forced induction kits produce on the 330.
our box is of getrag origin but is indeed the same one found in the 3.0l z4 with slightly different internals, the part numbers are different, the z4m has the exact same clutch however as the e46 m3 with a lower spline count in the middl centre piece.... the m3 clutch is a good unit..... in vt2 spec the highest Tq ive seen from these centri blown cars is still pretty low, thats one of the reasons i went for the ess kit as power delivery is stock just a few notches up the graph.... ill go with the HPF clutch thats in development WHEN mine breaks, its a matter of time really.

thanks for chiming in... always nice to have new knowledge on the board.
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      09-17-2011, 02:28 PM   #256
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Quote:
Originally Posted by Beedub View Post
...the z4m has the exact same clutch however as the e46 m3 with a lower spline count in the middl centre piece.... .
I did not know that. Good info!
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      09-17-2011, 03:40 PM   #257
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Quote:
Originally Posted by DanFromTucson View Post
I did not know that. Good info!
yup they are identical.... my shop had both in stock, so it was really nice to get to examine them side by side, identical materials, layouts and thicknesses, the only difference was the middle spline count was lower on ours.
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      09-17-2011, 05:28 PM   #258
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3rd gear, 3000rpm, press the sport button and let her rip. Thats how it should pull in 3rd. First and second gears are great though. The rpms really swing quickly up top. The tires are showing their weakness.
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      09-17-2011, 05:36 PM   #259
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Quote:
Originally Posted by Beedub View Post
would be nice if ess offered us an updated tune like they reguarly do for the m3 kits, i think im going to do some data logs and get them over to ess to see if we can tweak the tune alittle, a mid to high 11 tune all the way through the power band would be lovely... then meth/water would take this down to a low 11, prettty much what the tune does now.
While I would also be thrilled with a tune that has a "baseline" optimized for water/meth, keep in mind that our engine management setup and tune is heavily driven by the wideband oxygen sensors. Adding water/meth will richen the mixture, sure; but the O2s will sense this, and the ECU will make adjustments to dial in the AFRs that ESS has set in the tune. In light of this I would expect there to be an "adaptation" phase after installing the water/meth kit during which the power gain should increase slightly while the ECU re-optimizes the AFRs. It could also be an interesting idea to run less meth than 50%; most of the benefits of running water/meth actually come from the water, so if you're using a small nozzle and aren't going to quench combustion, running more water could be cheaper, more beneficial, and have less impact on AFRs.
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      09-17-2011, 05:40 PM   #260
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Quote:
Originally Posted by Roffle Waffle View Post
3rd gear, 3000rpm, press the sport button and let her rip. Thats how it should pull in 3rd. First and second gears are great though. The rpms really swing quickly up top. The tires are showing their weakness.
Do you like the sport button or use it regularly? I haven't in a while, mostly forget about it...I suppose the remapped throttle could be pretty fun with such a beastly setup. There is something to say about the psychological effect of a very sensitive throttle unleashing massive power

Could you describe how the sensation of the car pulling evolves through the rev range, say in 2nd to redline? Since my sneaky leak was fixed, I am quite happy with the midrange pull (as you say, 3k+), but feel like the car is not pulling significantly harder after about 5k (this is the natural torque peak, but still). Do you spin the tires in 2nd gear on dry pavement?

Where was your leak found? Only one, or multiple? Any details about the equipment used to locate it?
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      09-18-2011, 12:47 AM   #261
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When I had a turbo car one way I checked for boost leaks was using a rig I made up for the turbo inlet. I bought a PVC schedule 40 pipe cap where the outer diameter was the same as the inner diameter of my hose coupler. I then drilled and tapped the PVC cap for a air line fitting like air tools have.

To test, I dialed my compressor regulator down to 10-15psi hooked the airline up and because the engine was off and everything was quiet you could hear/feel any air leaks.

Maybe some others that have experience with troubleshooting can confirm if any harm could come from it since this is on a S/C and a much more expensive engine, but I didn't have any issues with my setup. They may also be other ways that I am not aware of. Hope this helps.
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      09-18-2011, 05:20 AM   #262
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Quote:
Originally Posted by iPhoneEngineer View Post
Do you like the sport button or use it regularly? I haven't in a while, mostly forget about it...I suppose the remapped throttle could be pretty fun with such a beastly setup. There is something to say about the psychological effect of a very sensitive throttle unleashing massive power

Could you describe how the sensation of the car pulling evolves through the rev range, say in 2nd to redline? Since my sneaky leak was fixed, I am quite happy with the midrange pull (as you say, 3k+), but feel like the car is not pulling significantly harder after about 5k (this is the natural torque peak, but still). Do you spin the tires in 2nd gear on dry pavement?

Where was your leak found? Only one, or multiple? Any details about the equipment used to locate it?
i find the car drives really like a switch if on the sport button throttle map, i do love the little things though like ess has programmed a sport button memory ;-) so if you switch it on, its always on, whereas before it would turn off with a car shut of, if i accelerate full bore from 1-2nd, 1st is a good amount of wheel spin, enough to leave clear 11s in the roads, depending on the weather and coolness i get wheelspin in second or a "constant squealing" form they tyres as they JUST hang on.....

i did notice after half a day at the track i could no longer spin the tyres by midday, that was either because power was down or the tyres were creating more grip..... im suspecting alittle bit of both. The actual s/c unit get SO hot after a day of beating it was untouchable... i was however pleased to see this s/c unit can take absolutly anything the s54 can throw at it... The biggest issue with a centri blower?? that lack of Tq in the lower rev range.
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      09-18-2011, 06:29 PM   #263
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I use sport button on the highway (to compensate for the lack of low end torque), or getting onto the highway
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      09-18-2011, 06:32 PM   #264
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Quote:
Originally Posted by iPhoneEngineer View Post
Do you like the sport button or use it regularly? I haven't in a while, mostly forget about it...I suppose the remapped throttle could be pretty fun with such a beastly setup. There is something to say about the psychological effect of a very sensitive throttle unleashing massive power

Could you describe how the sensation of the car pulling evolves through the rev range, say in 2nd to redline? Since my sneaky leak was fixed, I am quite happy with the midrange pull (as you say, 3k+), but feel like the car is not pulling significantly harder after about 5k (this is the natural torque peak, but still). Do you spin the tires in 2nd gear on dry pavement?

Where was your leak found? Only one, or multiple? Any details about the equipment used to locate it?
we're both gonna have to get on a dyno to see the improvements of fixing the leaks, butt dynoes won't help much...

Traction control comes on most of the time near the top of 2nd gear, but I have worse tires than michellin sports as u have
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