By looking at those 4 graphs that i quoted earlier. First 2 are unported, last 2 are. I'm just saying...
I'm no expert though... Porting will increase the ease of air/gases passage, improving VE, improving HP, but you probably have to port most of the stuff, not selectively. Also i looked at my o2 and ebay o2 when i was changing my turbo and decided to stay with oem for a while. Didn't see much difference. Looks shiny, that's for sure. I dunno, I'll port my stuff sometime, but it's not gonna be just the exhaust manifold. When it comes to O2, i'd rather have an external dump fabbed to it, like Soon2BEvo did.

 

my current mods are comp 280's, UICP/LICP/FMIC, intake, tbe, smc alky inj, mbc, etc etc and have been running my stock turbo. I just finished my evogreen install today and the difference is huge and i'm untuned, i'm not talking slight difference, a huge noticable gain without a tune.

 

Congrats! Look forward to seeing some numbers!

 

I love the way you just decided to overlook the fact that the second car made the same power with a HFC (that's like 10-15whp loss as compared to a test pipe at that power level)

 

Keep in mind one of those has a HFC and one has TP.

Good porting and a good 02 housing does make the car much more efficient. The 9's seem to love it.

Here is a Evo 9 with stock turbo, ported exhaust mani, Ported hotside, cosworth cams, test pipe, exhaust cam gear, 91 oct, street tune:



Compare that to the FPgreen charts on 91 I posted before. Yes this is a strong 9 but it really woke up with the last round of mods, one of which was all the porting. It holds the 91 octane stock turbo record on our dyno.

 

Those numbers are crazy for stock 9 turbo on 91 pisstane. I have all bolton's and cams on my 8 and can't crack 300 on mustang dyno. I just purchased a 9 turbo and am sending my exhaust mani/02 housing out to be ported. Hopefully will turn the 9 into the Green this winter along with ported intake manifold/TB.

Jason

 

288 on CBRDs dyno ain't bad for a 8. I believe his dyno reads pretty close to ours, although he has the advantage of higher octane then we do.

Most TBE bolt on 9's do about 290-305whp on our dyno

Most TBE 8's, cams, etc do 275-290 on our dyno. Some do 300.

100% bone stock 9's do about 230-240whp

100% bone stock 05 8's do about 215-225whp

100% bone stock 03-04 8's do about 195-215whp

 

My 8 is not as strong as some others around here. Maybe I should have broke her in by beating on her!! An 8 around my way made about 10hp more on CBRD's mustang that mine with exact same mods, just different manufacturer.

Mods include:

TBE/02 housing/S1 cams/Walbro/DV/UICP/LICP/ETS 3.5" IC/MBC/head studs

I know i'm missing something but all bolt-ons are on.

 

My bad, "HFC" didn't even click. Not used to cats around here Polluting the atmosphere with testpiped 85% ethanol

 

I was about to say those numbers aren't very impressive until I noticed it was on a Mustang dyno.

 

Imo, you should pick up about 8-15 whp with the 9 and ported bits. Ever thought about alky? The 9 turbo stretches its leg more over the 8 with bigger boost. The only non-major work left on my Evo is a ported intake/tb and FMIC. I'd like to get my hands on Revolvers, but am fully content with my Comp Cams.


>I'm glad razorlab posted those dynos. Why exactly is there not a thread(or sub-forum) devoted to strictly posting dyno sheets w/ mod lists?

 

https://www.evolutionm.net/forums/sh...ad.php?t=35596

 

There is no arguement here that the green is a monster of a turbo for what it is. All I am saying is that I have the ATP GT3071R .63ar kit on my car and am putting down 401whp, 21.5 psi, reflash, and don't have all the bolt-ons you can get yet and AMS said that my car reached full boost at about 4,300rpm and pulls all the way to the end on a conservative tune. If I were to switch turbo's to the green on the same day I would have made less power, that is all I am saying. The green is great but for the money don't count out the atp stuff either. I know this is all here say but AMS said that if I did meth or race fuel that I would have no trouble seeing 475+whp and I don't think you would see that on a green with my mods!! Anyway after I get to the track I guess I will see. I am not one to boost up something without hard data so until I get to the track I am just saying the car feels great!

 

I would attribute a portion of your gains to the aftermarket turbo manifold and not soley the different turbo. The OEM turbo manifold is a log-style manifold, and is designed more for longevity than overall performance. A tubular style manifold, such as the Full-Race manifold, will put any log-style manifold to shame with all other variables remaining the same.

What style manifold does the ATP use?

 

Meh, I was hoping for something more organized and less chatty. I think it would be a good thing to have sheets (and not just guys giving peak numbers) and mod lists all in one place. Thanks for finding that though...