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-   -   Looking for 15-20 more WHP... (http://legacygt.com/forums/showthread.php?t=200879)

Turkeylord 02-01-2013 03:30 PM

Looking for 15-20 more WHP...
 
So, playing with some ET calculators... While I realize it's an oversimplification, they indicate I'm only ~13whp away from a 12.99 ET.

I'm wondering if that can be found easily. Couple a little more power with better driving and possibly better tires and I'd hope to be in the upper 12s all day long...


Here's the current setup:
2005 Legacy GT wagon, 5MT tranny
Stock clutch, replaced when I bought it less than 10k ago
Stock intake, MAF, inlet, TB hose
Invidia UP
BNR Evo3 16G
Cobb Catted DP
Stock cat-back
Cobb APv2
AVO TMIC
Grimmspeed EBCS
Deatschwerks 850cc sidefeeds
Deatschwerks 65c fuel pump
E85
What's the best bang-for-the-buck option here? I'd rather not go FMIC - I'm not sure the gains would be worth it - not to mention it's a spendy and less reliable option.

At the moment I'm considering an 18g or HTA68 on my existing setup. I figure it would cost ~$325 + retune to swap and it might be the best option. FMIC + Cat Back would be what, $1500 at least? And maybe good for 10 WHP, maybe?

Another thing to consider, is that I've seen peaks of 94-95% IDC on the AP display, and ~92% on the logs. Do I have enough headroom for 20 more WHP on the current injectors?

Of course, the other half of the equation is weight, but I'd need to drop ~150# to have the same result, and that seems like a stretch since the spare/tools/floormats were already out last time.

I realize this is all a bit academic, but thoughts?

Maxim_X 02-01-2013 04:12 PM

Are yout running a Cobb tune or a custom tune? Dyno time?

Th3Franz 02-01-2013 04:13 PM

Bigger turbo. What AFR's are you seeing right now under boost?

Turkeylord 02-01-2013 04:23 PM

2 Attachment(s)
Custom dyno tune, but we had to cut it a little short and finish via email due to a WGDC table being missed. :spin:

Lately I've been running some gas heavy "E85". According to my tester, it's more like 55% Ethanol. Attached are a couple recent logs...

Th3Franz 02-04-2013 05:22 PM

no wideband O2?

Turkeylord 02-04-2013 06:33 PM

Not onboard, tuner used a tailpipe sniffer on the dyno. It'd probably be a good idea anyway, but then again it's sure nice logging without a laptop...

Spec B 02-06-2013 06:37 AM

I remember reading about someone gaining 10+ whp by installing an electric DP cutout... It essentially bypasses the cat and exhaust and dumps the exhaust gasses straight out of DP. I think he had a stock dp tho..

Cool thing was you can shut remotely and have no extra noise.

luchadorjose 02-06-2013 07:06 AM

you just need to get some "true" E85, it'll get you more power if tuned for it. Or get a race gas tune to use when you're at the drag strip.

Turkeylord 02-06-2013 07:14 AM

Quote:

Originally Posted by Spec B (Post 4280802)
I remember reading about someone gaining 10+ whp by installing an electric DP cutout... It essentially bypasses the cat and exhaust and dumps the exhaust gasses straight out of DP. I think he had a stock dp tho..

Cool thing was you can shut remotely and have no extra noise.

I've thought about that, even tried to buy aperfectlegacy's e-cutout DP a while back. Just have to weigh the noise factor. I did enjoy beating some on the obnoxiously loud cars at the track last year in my quiet wagon...

Quote:

Originally Posted by luchadorjose (Post 4280831)
you just need to get some "true" E85, it'll get you more power if tuned for it. Or get a race gas tune to use when you're at the drag strip.

I was tuned and ran at the track on higher ethanol content... Probably around 80% as that's what they seem to serve up in the summer around here.

Code 02-06-2013 07:15 AM

Your clutch isn't going to like much more power.

Turkeylord 02-06-2013 07:16 AM

Quote:

Originally Posted by Code (Post 4280839)
Your clutch isn't going to like much more power.

Yeah, I know, I'm already pushing it. :( If it goes it goes, then I'll put in a CM300.

Code 02-06-2013 07:24 AM

I just ordered one of those in anticipation of going e85 on a setup very similar to yours. My only difference is a racerx fmic,aem cai, and autospeed cat back.

Turkeylord 02-06-2013 07:31 AM

I'll have to watch for your results - those would be the next logical steps if I was going to free up the intake/exhaust. You're going to love it. :)

Spec B 02-06-2013 08:06 AM

FWIW - my stock clutch started slipping on my VF43/E85 setup; swapped to FX300 and it is holding fine.

Also - I too am running 850cc injectors with my current HTA68/E85 setup - they can still keep up (but just barely). I am targeting 11.4-11.6 AFR on the high end, I have a wideband and log ever time I drive aggressively. I occasionally dip over 100 IDC - but only on very cold days and usually during spool up where I dip a little rich. On the high end I am at 96-97% IDC.

Turkeylord 02-06-2013 08:16 AM

Good to know, sounds like they'd be just about maxed out then. I'm up 900ft, so maybe I'd have a hair more headroom.


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