Originally Posted by
P10FTW Whoa, I would not go as far to say that. That is quite false info IMVHO. A VE is a little pickier to tune with but it is much better all around motor boost, N/A, small or big turbo. My VE witha T25 made 233 @ 7lbs, then at 13lbs it made 288whp on a 2.5 exhaust 93 pump. All in the fine tuning...
I would definitely agree that a DE whether RR or not is more noob friendly for tuning than a VE.
What manifold where you running though? From what I'm seeing with personal experience is, if you want to go VE you have to be ready to pay. It's not as simple as just boosting a DE. The cam overlap is a big problem with running T2 turbo's on VE. This is why Nissan made VET cams, high lift low duration, and low overlap (13* vs 48*).
Problem is you pay say $700 for a VE, then another $400-600 for VET cams, and you might as well stayed DE which has low overlap cams stock, and just upgraded something else.
Originally Posted by
VolcanicSE-R One thing that I thought about. I heard of people running a lowport intake mani on there. With that in mind, that should make me be able to use a factory ECU controlled IACV right? That should possibly fix the cold idle problem and also the occasional power loss. Plus the lowport mani should flow better too right? I do have a great T-25 in shape also that I could replace that slightly chewed up T28 with. The T28 has very little play but the wheel has some small nicks here and there but frankly I dont trust it 100%. Would the car need a retune if I swapped that T25 instead of leaving the slightly busted T28 in there?
Get yourself the Lowport intake manifold, some say they are good for giving around 15whp NA! Lowport many does use the older style IACV, so once you figure out the wiring (not too bad and I can help you with that), you should have a solid idling car.
As for the T28 vs T25, if the fins are not TOO bad, and the shaft play is not too bad, then keep on using it. T25 will run out of breath at a lot earlier then t28, but then again USDM Roller Rockers redline is 6700.
No tune changes should be needed, but T25 turbo will run hotter, which mean hotter charge air, which means if your inter cooler can't dissipate heat too well then hotter air to engine, which means more detonation, which means less timing, which means less power.
Yup that's the typical RR IACV. Go get a low port mani, it should fit, but watch out cruise control will not be happy with the RR/VE Valve cover.
This should help with the Low port mani install:
http://www.sr20-forum.com/769706-post2.html
Originally Posted by
Haulin200sx I just bought a Chevy, best darn car I drove in years!