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Before & After Dyno's w/ Vids

12K views 43 replies 9 participants last post by  smoothgetaway 
#1 ·
Here are some dyno sheets that I have for some before and afters. For those that don't know me, I have a 07 GT auto. my before was almost bone stock, had spacers, axle back, and ETD.
The Before & After for the headers are pretty much self explanatory

Before & After RRE Headers:





The blue and Green line are the after y pipe

After I had the custom y-pipe made:




The Green, Dark Blue, and Red are the after CAI

After CAI




 
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#4 ·
Yeah, his car is rediculously loud. I left before he had a chance to run on the dyno day we did at RRE/RRM but I heard it was rediculous with no muffler. :lmfao:

I badly need to get on the dyno. I wanna see no shit if I can make more power than you. Even without headers... :D
 
#9 ·
Yea yea....I will at the next dyno day
 
#11 · (Edited)
Am I reading this right?

Stock you were at:

190 lbft tq and 226hp

Headers installed

207 / 248

Y-pipe isntalled

223 / 252

CAI install

224 / 242

So with the CAI you gained 3 lbft of tq and lost 10 hp? Or are your dyno sheets no in chronological order from when you did your dyno pulls?
 
#13 ·
depends on what rpm you are looking at. the before and after for the headers was at around 6300rpm. so yes so far the numbers for stock and headers are correct for how you have it.

now if you look at the before and after for the y pipe, its at 4500rpm for tq. But if you look at 6000rpm before was around 212ft lb tq, and after was about 218ft lb tq. For the HP they kept it at the same rpm, almost around 6400rpm. Before 248hp, and after 252hp.

Now with the CAI installed it has gains throughout the power band up until 6000rpm. After that is when it fell on its face. So yes your looking at a 10hp loss. Hope that makes sense.

All the dyno sheets are in chronological order.
 
#14 ·
I know the Dyna Pack isn't lieing...but you're nearly a full bolt on beast and aren't we supposed to be somewhere more in the range of 300whp?
 
#16 ·
So you're saying that the automagic is about 50hp less because of the transmission? That's a pretty big number.
 
#28 ·
Pipe looks pretty good. Now bring that back up to a turbo and add a port for an external wastegate and you're in business!
 
#38 ·
4hp and 16lbs of tq added for 200 bucks, and an easy bolt on.... no one would buy them? Your crazy!! That 16lb of tq is where it is at! I'd give 200hp for 16lb of tq.
 
#41 ·
People pay that for underdrive pulleys and gain about the same....
 
#43 ·
So who made that custom Y Pipe for you...I may be interested haha. Could you tell me where the shop is located? And would they know what I mean if I give them your name?
 
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