- Jul 30, 2014
Down the block,
This may be a very long post so bear with me. I have been doing process of eliminations and I'm getting closer, but I don't want to just throw parts at the car. I have been having a very strange boost issue and everything I do doesn't make it any better. I started with a 14b turbo with a swapped 16g exhaust housing. I did a boost leak test and it sounded like It was leaking from the exhaust housing. So I swapped one of the four t25 I have laying around. Tested for leaks again and I had zero. Now that everything is in good shape, I take the car out and no matter what I do at about 5k rpm it cuts out and I'm really rich. I'll either build boost to 5 pounds or 20 pounds, pretty much whenever it feels like it. I'm at a loss I don't know if timing is being pulled or what is going on, it just hits boost and then starts to bog then falls on its face. If I give it half throttle it'll go past 5k rpm as long as I'm not fully in boost. No matter what I do it'll fall on its face and run pig rich if I give it any more. The car is fully stock aside from fmic and blow off valve. It idles perfect and revs up perfect with zero smoke, but my tail pipe is black so I know it's rich up top. I've been pulling hair out trying to figure this out and I've searched for days now. I could have 2 issues but I feel like they are linked together. Thank you ahead of time if you've made it this far. I've tried everything, I'm just running wastegate boost also. I also can not scan the car since it's a Frankenstein.