smoked28
10+ Year Contributor
- 101
- 4
- Jul 14, 2012
-
Keystone Heights,
Florida
Ok I will start by giving a brief description of my build. I have a 2g with a 6bolt block/7bolt head, 14b with 16g compressor wheel, 550cc injectors, fmic, cyclone intake manifold, and mild 272 cams. The previous owner did all of the work. Now for the issues. When I bought the car the guy told me it had low compression in 2 cylinders, it ran like crap(wouldn't idle unless revved for minutes, and even then it would stall some times and randomly raise to 1500-2000 and hold untill reved then it would come down and gradually raise back). I fixed most of the issues (starter, clutch, master, slave, timing belt, plugged vacuum leaks, etc.) After fixing the vacuum leaks it idles a lot better(now it only takes a minute to get it to hold an idle and it doesn't raise to 1500-2000 as often. Also, the boost was set at like 25 psi so it was hitting fuel cut off, so I turned the boost down to like 13-14 psi but now(it had done this before too) it seems that the boost gauge is acting funny. When driving, I begin to accelerate and the gauge stays at about 10 psi vacuum and then shoots up to 12 psi boost and then back down when I shift. I imagined it would be more gradual than this but it is my first boosted vehicle so perhaps this is normal. That's why I wanted you guy's input. So my two questions were 1) Why does my idle randomly raise to 1500-2000 rpms and stay there until I rev and then goes down and gradually raises back up? I seem to have taken care of all the vacuum leaks so I am stumped. And 2) Why could my boost gauge be acting so funny or is this just normal? I have a video of the car boosting that I will post later. Thanks in advance and sorry for writing so much!
