ATTN: GT40 owners......

eds04max

eds04max

New member
May 7, 2008
412
0
0
Landis, N.C.
I'm trying to decide if I want to try a larger exhaust housing. I'd like to hear feedback from anyone running the larger exhaust housing on a GT4094. I'm wanting to reduce drive pressure and exhaust temps without giving-up TOO much spool-up. What do ya' think????? Ed.
 
malibu795

malibu795

misspeelleerr
Apr 28, 2007
8,236
550
113
42
in the buckeye state
first of there are 4 housing sizes
.85
.95
1.06
1.19

which one you got and what are you looking at going to?


edit: fixed the numbers
 
Last edited:
eds04max

eds04max

New member
May 7, 2008
412
0
0
Landis, N.C.
Guess I should have spelled that out in original post.
Currently running 1.06. I was thinkin' that Garrett had a 1.15 and I was on my way to their site to confirm but you just saved me a search. That 1.28 is gonna' be a big differance, I assume??? I hate to install that thing and then not like it..............anybody ran the 1.28 yet????
 
C.A.P

C.A.P

New member
Feb 16, 2008
103
0
0
I run the PPE 4094 and its spools faster than stock with the right tunning! EGT are all about tunning too. It goes hand in hand.
 
eds04max

eds04max

New member
May 7, 2008
412
0
0
Landis, N.C.
bluemax, I see 1760* (max recall) on a 1/8th mi. drag. Sometimes it'll stay under 1700. Sled hooks yield the same.
BTW, I'm more concerned about drive pressure due to restriction in the small turbo.
 
eds04max

eds04max

New member
May 7, 2008
412
0
0
Landis, N.C.
Brayden, thanks for the input.............but I think I'm pretty happy with the tuning. That has been tweaked for E.T.'s
BTW, I don't claim to be "MR. Tuner", but I know somebody who is.;)

Back on track here...........the info I seek is for the various housings and how they affect drivability. I know the 1.28 A/R would help at the track, but how bad will it hurt spool-up with the toy-hauler in tow??? Thanks, Ed.
 
eds04max

eds04max

New member
May 7, 2008
412
0
0
Landis, N.C.
If I could get a 1.15..........I think that would work good. But I'm not too sure about the 1.28.
If I switch to a 4294, then I can get a 1.15 AND be just under the limit of our STPA 2.8" class!! But, here again, I'm worried about towing manner's.
 
bullfrogjohnson

bullfrogjohnson

Big Girl!
Nov 20, 2006
4,167
1
0
39
Locust, NC
eds04max said:
If I could get a 1.15..........I think that would work good. But I'm not too sure about the 1.28.
If I switch to a 4294, then I can get a 1.15 AND be just under the limit of our STPA 2.8" class!! But, here again, I'm worried about towing manner's.
Click to expand...

I can't tell you for sure, but i dont know about towing manners. I know mine does not like to tow very much. Its either spooled out not but regardless the EGTs are not out of control
 
eds04max

eds04max

New member
May 7, 2008
412
0
0
Landis, N.C.
Well, you need to be thinkin' about some towing mannors...................you might have to tow ME home one of these nights!!!:hug:
 
Bluemax

Bluemax

???????????
Sep 25, 2006
846
0
0
43
Missouri
eds04max said:
bluemax, I see 1760* (max recall) on a 1/8th mi. drag. Sometimes it'll stay under 1700. Sled hooks yield the same.
BTW, I'm more concerned about drive pressure due to restriction in the small turbo.
Click to expand...


I am useing the .95 housing and I have got the egts way down from when I first started trying to tune it. I am seeing about 1400 in about a half mile boosted launch with it. I don't have a drive pressure gauge so I'm not sure about that though. I share the same thinking as Brayden, it has worked for me so far.:)

duramaximizer said:
The last time I checked.... that killed hp.:cool2:
Click to expand...


Not necessarily....at least not if done properly, and the right amount of logging and tuning time is applied. :)

I'm sure given the right amount of time and the truck sitting on the dyno right there with him Tony would be able to get the egts down and power up considerably too, he knows what he's doing....;):D
 
Last edited:
You must log in or register to reply here.
Top Bottom