My '09 GT-R had an AAM resonated mid-pipe, HKS drop-in filters and Cobb canned Stage 2 93 octane tune. The baseline dyno with the Cobb 93 octane stage 2 tune was 461.42 awhp and 441.58 awtq SAE corrected (uncorrected 476.72 hp / 456.21 tq).

After the custom tune the car put down 491.17 awhp and 513.30 awtq SAE corrected (uncorrected 505.02 hp / 527.78 tq).

The dynos are attached:

Tom

 

Nice results, especially in the mid range.
Would have been nice to get before/after 60-130 times to see the difference.

 

I ran an 8.45s 60-130mph with the old tune in cool weather. I am going to try to get a run in within the next week or so with the new tune.

Tom

 

Thanks!
I almost asked if perhaps you had initial results.
It appears you do!
I look forward to seeing the results.
I think it should do pretty well.

 

I try to test out my car after doing mods. Here are the methods I use to test (in descending order of accuracy):

60-130mph on vbox
1/4 mile trap speed
Dynojet (usually on the same dyno)
Seat of the pants... (calibrated by NASA)

Tom

 

I just realized you are talking about AAM.
I dealt with them many years ago when I had a built 3000GT VR4.
Is Mike still running the show?

 

Yup! Mike spent about 4 hours tweaking with the tune. I think he did a pretty good job.

Tom

 

He is a good guy!
If you talk to him and remember, tell him Brian from CT says hello.

 

Nice numbers Tommy Boy!

 

Thanks! I am trying to figure out why you are being so nice to me...

Tom

 

Last fall, my GT-R with just AAM mid-pipe, HKS drop-in filter and canned Cobb stage 2 93 octane tune ran the following times with a 1 foot roll-out (WITHOUT LAUNCH control or building the revs at all...just mash the throttle from idle).

0-60: 3.30s
0-100: 7.11s
0-120: 9.91s
0-130: 11.75s
60-130: 8.45s
1/4m: 11.30 @ 127.68mph (GPS trap) averaging last 66' of run: 126.71mph

With no roll-out (same run so no Launch control):
0-100km/h: 3.73s
0-160km/h: 7.33s
0-200km/h: 10.97s
100-200km/h: 7.24s

Last night I went out on the same private road that I used to datalog the other run. The temps were pretty similar to the prior run...but there was definitely more humidity in the air and I am running now on Dunlop high performance all season tires (come OEM on GT-Rs as a cold weather package) compared to the OEM summer Bridgestones that were previously on the car.

Here is the one run I data logged (same procedure...no launch control...mash throttle off idle and go):

0-60: 3.14s
0-100: 6.80s
0-120: 9.52s
0-130: 11.23s
60-130: 8.09s
1/4m: 11.10 @ 129.23mph (GPS trap) averaging last 66' of run: 128.32mph

With no roll-out (same run so no Launch control):
0-100km/h: 3.57s
0-160km/h: 7.03s
0-200km/h: 10.49s
100-200km/h: 6.92s

Another test note: The tires probably needed to be heated up some more because my traction control light was flickering throughout the first 3 gears (even in R mode)...which only seems to happen if there is some precipitation on a road surface (which there was none last night). I think I can improve on these numbers by another .1s using my standard launch proceedure. I am going to try to improve on the time before submitting it.

Tom

 

its a high 7 sec car, maybe time for a driver mod?

 

Nice results. If you end up shooting some video while at the local drag strip you should let us know.

 

Tom,

Great improvements!

Are you interested in coming out to some friendly meets at ISP in Beltsville, MD; we usually get together every two weeks (Sat) and have some fun after midnight?

 

Thanks guys!

I am heading to a track rental tomorrow at MIR to see how it runs.

ISP sounds like fun. I will have to check it out.

Tom