RPI GT exhaust GB thread.

[jonanator]

How bad is the droning? Is it pretty loud at low RPMs? I don't want to wake up my neighbours as I creep up my driveway lol.

[Denverbrit]

I live in the burbs and I can drive around 25 to 30 mph (i.e. 3000 rpm and lower) without people sitting out on their porches necessarily lifting their heads as I go by. The car is not noisey at all at idle or when driving up my driveway into the garage. If you open the car up however it's almost up to full on race car levels of noise and exhaust music i.e. bloody fantastic. At 3000 rpm on the highway with the windows up the drone is louder than I would like but as the car is not used for longer trips it's not really a major issue for me.

The managers at the Ferrari dealership complained that not only was the Tubi on the M3 too quiet but it had a rather flat tinney sound quality. Listening to several vids of the other exhausts currently available for our cars, many seemed to also be a little tinney. Although better looking, hardly worth buying sound wise compared to stock. The RPI exhaust gives rich smooth tones with lots of harmonics through the rev range and then it's just plain racecar at the top end. There were of course several Ferraris (mostly 430s) in the shop while my car was being worked on and several had aftermarket exhausts that sounded louder than the RPI when the cars were being driven around at low speeds. I wanted an exhaust that would also reveal the exotic nature of the S54 and I reckon I can now give the ferrari guys a run for their money sound wise.

[sales@ESSTuning]

Exhaust looks sweet Eloy nice work

[laidback]

Nice!

Originally Posted by Denverbrit

Just had my exhaust installed yesterday. A friend of mine has several Ferraris and reckoned Ferrari of Denver would be able to slot me in with their shop. The managers were as interested as I was in how the RPI exhaust would sound as they had recently intalled a Tubi on an M3 and thought it was too quiet. Intall was easy - straight bolt on. The finish of the exhausts is fantastic, a real deep lustre and the RPI logos look good too. The RPI exhausts weigh 7.8 lbs a piece compared to 22lbs stock so a big weight saving. Fired the car up in the shop and we were all surprised that it seemed fairly quiet. However when the engine is under load - it is pretty loud. All the managers thought is sounded way better than the Tubi and was the best exhaust they had heard on an S54 yet. The exhaust has transformed the car which now sounds exotic with lots of different harmonics as you climb the rev range. As I was leaving I opened the car up in first and through to redline in second past the Ferrari dealership as several of the managers had come out to hear the car. I got lots of thumbs up. Yes there is drone on the highway but the car sounds fantastic when you put your foor down. I'll try and take some video later today.

imho the drone is not bad at all, been using it for several weeks, to make it short it simply sound amazing, your neighbors might even go outside just to see you park j/k...

Originally Posted by jonanator

How bad is the droning? Is it pretty loud at low RPMs? I don't want to wake up my neighbours as I creep up my driveway lol.

[crfine88]

couple of pics

[crfine88]

She used to pure and now she growls.

First impression:
At idle the the sound is a low rumble. Exhaust really wakes up upon exceleration. The sound is very loud and will turn heads weather you like it or not. The only cabin drone I have experienced is during downshist or quick accel. arround 3K RPM. At Freeway speeds the exhaust is tame. As stated above, huge weight reduction. Overall fittment is great and exhaust looks really good in person.

[Beedub]

rpi i pmd you.

[nmulax]

Originally Posted by crfine88

She used to pure and now she growls.

First impression:
At idle the the sound is a low rumble. Exhaust really wakes up upon exceleration. The sound is very loud and will turn heads weather you like it or not. The only cabin drone I have experienced is during downshist or quick accel. arround 3K RPM. At Freeway speeds the exhaust is tame. As stated above, huge weight reduction. Overall fittment is great and exhaust looks really good in person.

Sending you a PM.
Would you be down for meeting up so I could hear it in person?

[Denverbrit]

Another view with some sunlight to show the finish / RPI logos.

[Chuck I]

I guess I'll just take a nap here and wait for mine... It's some where on it's way here.... BUT... I'm ready!!!! Chuck I

[Z4MCJJ]

Chuck I,

Lol.

[jonanator]

Originally Posted by crfine88

She used to pure and now she growls.

First impression:
At idle the the sound is a low rumble. Exhaust really wakes up upon exceleration. The sound is very loud and will turn heads weather you like it or not. The only cabin drone I have experienced is during downshist or quick accel. arround 3K RPM. At Freeway speeds the exhaust is tame. As stated above, huge weight reduction. Overall fittment is great and exhaust looks really good in person.

I love the TE37's!! What are the specs and offset?

[crfine88]

Originally Posted by jonanator

I love the TE37's!! What are the specs and offset?

Thanks

Front 19X8.5 et32
Rear 19X10.5 et25

[RPIpower]

Originally Posted by Denverbrit

Just had my exhaust installed yesterday. A friend of mine has several Ferraris and reckoned Ferrari of Denver would be able to slot me in with their shop. The managers were as interested as I was in how the RPI exhaust would sound as they had recently intalled a Tubi on an M3 and thought it was too quiet. Intall was easy - straight bolt on. The finish of the exhausts is fantastic, a real deep lustre and the RPI logos look good too. The RPI exhausts weigh 7.8 lbs a piece compared to 22lbs stock so a big weight saving. Fired the car up in the shop and we were all surprised that it seemed fairly quiet. However when the engine is under load - it is pretty loud. All the managers thought is sounded way better than the Tubi and was the best exhaust they had heard on an S54 yet. The exhaust has transformed the car which now sounds exotic with lots of different harmonics as you climb the rev range. As I was leaving I opened the car up in first and through to redline in second past the Ferrari dealership as several of the managers had come out to hear the car. I got lots of thumbs up. Yes there is drone on the highway but the car sounds fantastic when you put your foor down. I'll try and take some video later today.

Thanks for the feedback. Now you guys know why it took me soooo long to finish this exhaust? The straight 6 is a hard engine to make sound good. It has a very naturally raspy sound that is hard to dampen without a loss of performance.

Originally Posted by Rom3n

Exhaust looks sweet Eloy nice work

When is the ESS tune for the exhaust coming out? lol

[kmrbmw]

Exhaust Installer recommendations, 4 my Z4 M. in the NYC / Westchester area.

I would really appreciate any advice you can give regarding getting my new RPI exhaust that I need installed on my 2007 BMW Z4 M coupe. I live in Westchester, (Tarrytown) 10706 Zip. Any recommendations through experience
- Can I just take it to a mavis / mineke and get installed.

Thank you

[Chuck I]

Originally Posted by kmrbmw

Exhaust Installer recommendations, 4 my Z4 M. in the NYC / Westchester area.

I would really appreciate any advice you can give regarding getting my new RPI exhaust that I need installed on my 2007 BMW Z4 M coupe. I live in Westchester, (Tarrytown) 10706 Zip. Any recommendations through experience
- Can I just take it to a mavis / mineke and get installed.

Thank you

kmrbmw, The installation is very simple and can be done by any muffler shop. There are only 4 bolts on each side. It only took me about 5 minutes to remove each unit. It should take no longer to put back on (mine are to be delivered this afternoon). I'm going to take some pictures of the installation this afternoon... Chuck I

[kmrbmw]

ty for the info, post how much u had to pay the muffler shop, if you don't mind

Have a great day

[jonanator]

Originally Posted by kmrbmw

ty for the info, post how much u had to pay the muffler shop, if you don't mind

Have a great day

I think "Chuck I" is doing the install himself so he might not be able to provide a price. It shouldn't cost more than $80 though, I am thinking $60-$80 is fair

[kmrbmw]

cool, great info , luv this place

Thank you

[Beedub]

finally ordering/paying mine tomorrow so will be the only UK customer with this and i have to say customer service has been excellent!!! i cant wait to get this on my car. i will be stripping off my old mufflers chuck style shortly!!!

cheers RPI for sorting the probs we have come up against!!

byron

(UK buyer)

[kmrbmw]

I agree the honesty and responsiveness is great

[Engineer Daddy]

Had a little package in the garage when I got home at 4:45 today. Did not even come in the house, loaded it up and headed straight to the muffler shop down the road. They were suppose to close in 5 minutes. Looked at the car, I showed them the mufflers, they said "No problem". 15 minutes $20 later all was done.
I took the long way home and have to say....I love it! It is definately not for the timid. I had no problems listening to the stereo with the windows up, for the 30 seconds I tried it. The rest of the time was spent listening to the exhaust sing to me, and everyone else in a 250 meter radius.