Rot8n87

iTrader: (1)

Hello, I recently changed my injectors as my old ones were leaking badly. My car is an 87TII. I am pretty sure the problem is I put in the cheapest injectors I can find. I have already disposed of my old ones.
Ever since I have changed my injectors, there has been this really bad bucking after 4k in every gear except first. This bucking also only occurs at WOT. Bad enough to make the tires chirp between the jerks.
I would like a second and third and etc. opinion on the reason(el cheapo injectors). If this is the case, I would like to know some good suggestions on where to get good injectors.
If this is not the case please tell me what other possible things it could be.
Now for the electrical problems.
My car's door open beeper randomly starts beeping even when door are closed. When I hit bumps on the road it randomly turns on and off, probably a loose wire, but I figure I will just put all my problems out there.
The lights dim when I depress the brake pedal. I have changed the alternator. Headlights, dash etc all dim some. THis also occurs when I turn on heat/ac.
About half the time that I start the car, the tach will fail to work. Usually I can turn it off and back on and it will work. Not sure what that is all about.
Now, the car is about to hit 80,000 miles, what can I expect as far as engine, turbo rebuilds coming up? Where can I find the parts to do these rebuilds? Is it better to just send the turbo to a machine shop to be rebuilt?
Finally, when I get this car running properly I plan to do a little modding and would like suggestions as to what kind of turbo back systems there are available.
I would like to do some porting while I am rebuilding the engine and was wondering if there is some sort of template I can order
I know its possible to swap S5 bump/ front end onto my S4, but is it difficult? Does everything just bolt up?

Thanks for your time and patience.
-Matt.

cantaffordit

wow, youve got lots of questions there buddy.

Start with the engine issues. Do a compression test to see if there is much use to working on that motor. If it does need rebuilding there are lots of good shops that will give u a deal. Rotary ressurection might be best bang for buck. Send your injectors out for testing and cleaning. You can get it done usually around 100 bux for all 4. Have you checked for vacuum leaks? The injectors you switche dmight have brittle cracked rubber o rings allowing a vacuum leak that is very hard to detect unless you know to look for that. I would bet the source of your problems is the injectors. Thats assuming your car ran properly before the changes you made.

Rot8n87

iTrader: (1)

I dont have my old injectors anymore. And the ones I bought are new. Where could I get a decent set of oem ones?

Yes lots of questions, I am trying to get this car running great.

I also have the hot starting problem. CHecked my TPS today using the method on fc3spro and I was at .98Ohms under no throttle and 5.89Ohms at WOT which is good based of the sites information.

Go48

iTrader: (7)

Start a WTB thread in the 2nd gen parts for sale section or try eBay. Send any used units off to have them tested and refurbished. CruzinPerformance.com is a company that I've had good experience with.