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New VR4 owner build

sodak349

New member
Joined
Dec 21, 2024
Messages
2
Location
Sioux falls, south dakota
I recently purchased a 92 vr4 from an older gentleman who had mild mods. Clipped 16g front mount bigger injectors/fuel pump ( currently unknown but he said slightly bigger than stock), using an apexi safc and upgraded clutch lightweight flywheel again unknown.
I'm pulling motor to clean up and fixs leaks. Here is what I plan to do if there is anything I'm missing id appreciate any advice.

Cams with new springs
STP exhaust manifold
APEXI intake with 2g maf
All new fluids and belts
Balance shaft delete
head and exhaust studs. With gaskets
Water pump
New hoses (coolant and vaccum)
replace safc with ecm/dsm link
Wideband to replace exhaust temp for tuning.
Shift bushings.
2.5" exhausr with muffler

Plan on keeping ac and cruise control. I live in midwest and have very few corners so not concerned with lag.
Thanks again.
 

rbparker

Member
Joined
Apr 11, 2019
Messages
19
Location
Seattle
Would recommend a 3 inch exhaust over 2.5 inch. The 2.5 inch will negate the FP manifolds strong suit, flow.
You are going to want to buy the Mitsubishi hardware for the exhaust manifold to turbo and turbo to o2 housing, otherwise the hotparts will vibrate/heat cycle themself apart. *Its gonna be stupid expensive.
I really like the MR. Gasket copper head to exhaust manifold gasket and the ExtremePSI multi layer exhaust manifold to turbo gasket.
I would recommend the FP exhaust manifold blanket and any form of heat shield for the turbo exhaust housing/o2 housing.
You will need a blow off valve that isn't a stock unit.
You need a larger fuel pump like a 255 that is "re-wired", and a FPR. You may consider replacing the fuel feed line with a larger diameter and using the OEM feed line as the new return line. Dont know how far down the rabbit hole you want to go, but you could easily add a flex fuel sensor for E85.
You need to figure out what injectors you have/what you need to tune the car
I would be considering a kiggly HLA oil pressure regulator, going with speed density over the 2g MAF, and stuffing an 18g compressor wheel in the TDO5 housing.
 
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