Bren Tune or ESS Tune?

DarkstarZero · 10-04-2010, 09:23 PM

I'm pulling the trigger on a Tune for the Z4M. The question is, which one do I get?

Bren Tune is cheaper, maybe by $100. Some forum members see +20hp on the dyno with just this tune. http://www.zpost.com/forums/showthread.php?t=409785

ESS Tune is $795. ESS has great customer service and they make the only SC for the Z4M so they know what they're doing. Power gains are only 8-10hp, half of the Bren Tune.

I have mods on the car and want to get the best out of them which is why I'm getting this. I track the car every other month and autocross every month. I don't use the sport mode at all because it just shortens the throttle. I need the full range of the throttle so I can feather it while driving at the limit and sport mode would just cause me to take it into the wall. A tune that can fix sport mode so it gives me instant responsiveness but doesn't shorten the throttle would be great!

The__J__Factor · 10-05-2010, 12:17 AM

Brenn Tune looked really promising, and if you take your car their you get it fine tuned on the dyno. That makes it worth it.

thekurgan · 10-05-2010, 12:39 AM

The 20hp with the Bren was also with the rpi scoop thing and an exhaust. I know ESS had some dyno run with the scoop and 20-22hp was seen, ESS chose the lower of the dyno runs for their hp posting. Just something to think about.

http://www.zpost.com/forums/showthre...t=ess+software

http://www.zpost.com/forums/showthre...t=ess+software

BT M3 · 11-09-2010, 11:56 AM

Quote:

Originally Posted by thekurgan

The 20hp with the Bren was also with the rpi scoop thing and an exhaust. I know ESS had some dyno run with the scoop and 20-22hp was seen, ESS chose the lower of the dyno runs for their hp posting. Just something to think about.

http://www.zpost.com/forums/showthre...t=ess+software

http://www.zpost.com/forums/showthre...t=ess+software

This is incorrect. The car had the same mods before and after. The gains were from the reflash. The video on youtube shows the dyno process.

View Poll Results: Which Z4M tune is best?
Bren Tune	3	21.43%
ESS Tune	11	78.57%
Voters: 14. You may not vote on this poll

10-04-2010, 09:23 PM	#1
DarkstarZero Lieutenant Colonel 1014 Rep 1,721 Posts Drives: Daytona 95 M3, X7 M50, e92 M3, Join Date: Nov 2007 Location: Washington DC iTrader: (6)	Bren Tune or ESS Tune? I'm pulling the trigger on a Tune for the Z4M. The question is, which one do I get? Bren Tune is cheaper, maybe by $100. Some forum members see +20hp on the dyno with just this tune. http://www.zpost.com/forums/showthread.php?t=409785 ESS Tune is $795. ESS has great customer service and they make the only SC for the Z4M so they know what they're doing. Power gains are only 8-10hp, half of the Bren Tune. I have mods on the car and want to get the best out of them which is why I'm getting this. I track the car every other month and autocross every month. I don't use the sport mode at all because it just shortens the throttle. I need the full range of the throttle so I can feather it while driving at the limit and sport mode would just cause me to take it into the wall. A tune that can fix sport mode so it gives me instant responsiveness but doesn't shorten the throttle would be great! __________________ BMW CCA Track Instructor Join to win a M School Day at the Performance Center! Enter Referral ID: 420186
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10-05-2010, 12:17 AM	#2
The__J__Factor Major 88 Rep 1,090 Posts Drives: ///M Coupe Join Date: Sep 2008 Location: Gold Coast, Australia iTrader: (0)	Brenn Tune looked really promising, and if you take your car their you get it fine tuned on the dyno. That makes it worth it. __________________ 135i N54 manual MR-S with a 2zz swap and mods Sold EVO X MR - Phantom Black - Ti Exhaust - Ti UICP - AQM Intake - Sold Z4 M Coupe - H&R - RE Diablo - RPi - Tekarbon - Sold
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10-05-2010, 12:39 AM	#3
thekurgan Bad Lieutenant 232 Rep 3,517 Posts Drives: E90M3 Join Date: Aug 2007 Location: Sacramento iTrader: (0) Garage List 2008 BMW M3 [0.00]	The 20hp with the Bren was also with the rpi scoop thing and an exhaust. I know ESS had some dyno run with the scoop and 20-22hp was seen, ESS chose the lower of the dyno runs for their hp posting. Just something to think about. http://www.zpost.com/forums/showthre...t=ess+software http://www.zpost.com/forums/showthre...t=ess+software __________________ 02 E39M5 \| TiAg/Schwartz \| Tubi Rumore \| Ultimate Ti Pedals \| E60 SSK \| Jim Blanton 3.45 40/100% \| Coby Alcantara \| StrongStrut STB Last edited by thekurgan; 10-05-2010 at 12:41 AM.. Reason: l1nk5
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