help finishing a 91 318is turbo build
new to the forum. picked up a 90 318is with a partially completed budget turbo install. working on things one step at a time, but it's definitely tough to pick things up mid-stream. goal is mild boost, keep stock engine and clutch. I've picked up a limited slip for the car as well to replace the open diff it came with.
near as I can tell the engine is solid, turbo functions (mitsubishi turbo off of a miata kit). there's a massive vacuum leak somewhere which I haven't been able to chase down. when I picked the car up there was no exhaust on it, just a flex pipe attached to the turbo flange.. I had a custom exhaust system put in with 2.5" pipe, magnaflow cat and muffler. O2 sensor is installed. there is a BEGI RRFPR installed, mustang injectors, stock ECU.
there's a nasty oil leak somewhere as well - probably the return oil line on the turbo. the intercooler piping kept slipping apart, but I think I've fixed that now.
on the plus side, body and interior are in pretty decent shape after several weeks of effort, engine itself appears solid.
Looking forward to your help, advice etc as we get this beast tuned in.
91 318is AlpineWeiss Turbo 5 speed
91 325ic Calypsorot 5 speed
88 325ix Lachssilber 5 speed