gt3 engine tunning
#1
gt3 engine tunning
Hi
I was thinking to upgrade my GT3 997.2 engine as i feel there is some lack of torque at low rpm.
I saw cobbtuning accessport, any thoughts about it?
I am using the RS fly wheel and clutch on my car, so instant revving is not a problem.
Thanks
I was thinking to upgrade my GT3 997.2 engine as i feel there is some lack of torque at low rpm.
I saw cobbtuning accessport, any thoughts about it?
I am using the RS fly wheel and clutch on my car, so instant revving is not a problem.
Thanks
#2
Rennlist Member
I think your only "real" options are Cobb AccessPort and Sharkwerks' EvoMSit tune. I personally am using a Cobb AccessPort as I have a 3.8L build on my 997.1 and the Cobb AccessPort allowed for a custom tune from Dyno Spectrum (guys that worked on developing the Cobb AP). I have not tried their "off the shelf" tune that is included with the Cobb AP but I reckon it's fine for small improvements, and the nice thing with the Cobb AP is that you'll have the option to get more out of it with a custom tune later if you want. Plenty of guys are using Sharkwerks/Evolution Motorsports' EvoMSit tune with no issues.
Not sure what to tell you beyond that. Your question "any thoughts" is pretty open-ended. Uhhh....I could tell you that it has a sleek shape and funny looking buttons, or that I think the OBD-II cable that's included is a hair too short, or that they should offer a faceplate option with real carbon fiber and not that fake hydro-dipped one. (Not really, I don't care about that, but you get my point.)
Not sure what to tell you beyond that. Your question "any thoughts" is pretty open-ended. Uhhh....I could tell you that it has a sleek shape and funny looking buttons, or that I think the OBD-II cable that's included is a hair too short, or that they should offer a faceplate option with real carbon fiber and not that fake hydro-dipped one. (Not really, I don't care about that, but you get my point.)
#4
Rennlist Member
The 997.2 engine is not designed to have significant TQ at low RPM.
That is one reason why driving one is so interesting / rewarding.
Embrace the reality
Have fun.
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Mr. Adair (07-02-2019)
#5
If you said you were looking for better throttle response, then I would say go for the tune. But since you are looking for torque, I don't think a tune is going to be the answer. The only real answer for torque would be a 911 Turbo.
#6
The cobb increases low RPM torque significantly. But it's never going to feel like a V8 or a turbo. Nothing else will feel like a 911 turbo except a GT2
Look at the dyno chart here dude. It's their own website. Scroll down.
https://www.cobbtuning.com/products/...7-2-gt3-gt3-rs
Look at the dyno chart here dude. It's their own website. Scroll down.
https://www.cobbtuning.com/products/...7-2-gt3-gt3-rs
#7
GT3 player par excellence
Lifetime Rennlist
Member
Lifetime Rennlist
Member
imo, 997needs no tuning.
you should never let it drop below 5000rpm.
you should never let it drop below 5000rpm.
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#8
Rennlist Member
I bolted Fabspeed headers on my .1 and the increase in torque from 3000-5000 RPM's was very surprising. I'd do it again in a heartbeat.
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Robocop305 (10-24-2023)
#9
Intermediate
same here, the dyno before / after showed 21 lbft gain @ 5000 rpm. the map shows the separation starting at 3000 as voodoo states. i went with dundon catless race headers + their center muffler.
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Robocop305 (10-24-2023)
#10
Easy solution change the R&P ratio
#11
Rennlist Member