Testing AAM Midpipes with Short Tails and Z1 Intakes.
 

So I went on a Black Friday splurge and picked up the AAM S Line mid-pipes to go with the short tails I bought. I requested dyno pulls after each mod was completed. Not only that, I had dyno pulls done with each mod separately. In total, I have 4 sets of dyno results. I'm choosing the lowest correction factors, then highest power of each. Correction factors tend to be a tad optimistic.. I'll show uncorrected and SAE values with 0 smoothing. The dyno is set to 4500 ft. I'm not sure if the elevation setting increases power or lowers it, but I'm just throwing it out there.

I don't see more than a 5whp difference with uncorrected values, I see an even smaller difference under SAE. AFR's are on the rich side and have no doubts I'll see more power in a tune, but currently, it's not showing on the dyno. Am I bummed after spending a couple grand in parts and labor? A bit. The car does sound pretty damn good now. It has a nice growl and the tone smoothened out a bit compared with just short tails. I didn't really hear much of a volume increase over the stock midpipes mated with the short tails. The Z1 intake install is probably the easiest of all intakes to install, with the exception being short rams. I'm going to say a good tune should put me around 315-320whp. I think the ECU just really dialed into the older setup and was putting down good power. It hasn't had much time to relearn with the new mods. Those are just my educated guesses. Anyways, I'm anxious to hear some feedback.

First up is a stock baseline with AAM Short Tails.
Uncorrected: 302.67 whp 245.99 lbft tq
SAE values: 307.76 whp 250.13lbft tq
1.02 CF

http://i822.photobucket.com/albums/z...psv2aewpeo.png

http://i822.photobucket.com/albums/z...pszdgwcrzo.png

AAM Short Tails with Z1 Intakes
Uncorrected: 307.76 whp 250.00 lbft tq
SAE Values: 305.86 whp 248.45 lbft tq
.99 CF

http://i822.photobucket.com/albums/z...pshctcequz.png

http://i822.photobucket.com/albums/z...pskyf1uizy.png

AAM Short Tails with AAM Mid Pipes
Uncorrected: 302.25 whp 246.05 lbft tq
SAE Values: 306 whp 249.09 lbft tq
1.01 CF

http://i822.photobucket.com/albums/z...pstyj3gojw.png

http://i822.photobucket.com/albums/z...pszgangbhu.png

AAM Short Tails, AAM Mid Pipes, and Z1 Intakes
Uncorrected: 307.16 whp 249.62 lbft tq
SAE Values: 307.12 whp 249.59 lbft tq
1.00 CF

http://i822.photobucket.com/albums/z...psuiryhn1i.png

http://i822.photobucket.com/albums/z...pspc32lygr.png

Lastly, These are all the dyno charts plotted on the same graph, Uncorrected, and SAE

http://i822.photobucket.com/albums/z...psrgjat6en.png

http://i822.photobucket.com/albums/z...psgzzgikde.png

something just isn't adding up here......literally lol

should be gains somewhere with adding intakes and exhaust. was there any tuning done throughout the process or just parts being added?

Pretty sure there was no tuning done. Also I agree there should of been at least a few HP gained.

yea even with zero tuning there still should have been some jump.

I know nothing about the AAM mid-pipe. Is it just a section to go from the factory y-pipe to the tails?

Are you planning on a tune anytime soon ? def should have picked up a bit of power...

its cat back to the tails,the name is a bit misleading. it has two sections, an h pipe and then the mid pipe

after seeing the numbers and whatnot its not bad but for being a nismo tune should be a bit higher. stock cats im assuming so that's holding up some power right there.

Definitely agree with everyone, I was expecting something... lol. I'm still on stock cats right now and no tuning was done. When looking at the uncorrected numbers, on the chart with all the runs, you can see the intakes are adding power up top. On both dyno plots on the uncorrected graph that has Z1 intakes, it's making more power up top. When we start looking at SAE results, everything gets masked in calculations.

Edit: Those cats are definitely bottlenecking the exhaust. I guarantee opening that up would gain at least 10whp no tune on RTP's or TP's. It's almost like confirmation that to get more power over a Nismo exhaust with an aftermarket exhaust, you need to replace your cats.

subbed. I want to see this tuned on ECUtek.

Also a little strange there seems to be little to no gains with any of these mods.

I went full bolt-on prior to FI and I can say without a doubt that swapping the stock cats for HFCs was the single biggest NA mod.

Wow that's shocking

I wouldn't be to butt hurt as those numbers are pretty darn good without a tune. Not many see 300 plus whp until after a tune.

Sent from my SM-N910P using Tapatalk

Yea 307 isn't bad for numbers.

I believe mine with intakes and exhaust no tune baselined at 309whp then the tune unleashed a good bit more.

I'll drive it around for a few weeks and let it learn. It's only $50 for a few pulls