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Thinking of buying something from SupraSport? Good luck. Last year I bought some injectors from them, I could have got some used but I wanted a company that would stand behind their product. After 9 months I found out 1 was bad, high resistance. I contacted Jake and after much discussion he...

Does anyone know of a dyno tuner in the San Francisco bay area that knows how to tune using a Maftpro? Or at the very least someone willing to teach an old dog new tricks? Thanks

When I start my car the AFR is about 14 the Vf reading is 0 volts (normal with the cold start injector working). As the car warms up the AFR is 15-16 Vf is still 0 volts (normal with the cold start injector stopped working). It will stay in this condition till I restart the engine. After I...

Well my 90 Turbo died. Did some checking then called a tow truck. About 30 min later it started for about 2 min. Troubleshooting gave me a code 14. Changed the igniter and CPS, no joy, checked the timing the intake cam was 1 tooth advanced, reset it. I have ohmed the wires from the igniter and...

I have been searching for the last 3 days to find some help about my problem. I found some really cool stuff but nothing that helps. Here is the problem. 1990 7mgte auto. Stock. There are no code for the trans. Normal driving everything is fine, but at WOT it won't shift out of 1st and hits...

Here is my problem, at high rpm, 5500 + and about 11 psi boost the engine starts missing and stumbling. If I go easy up (low boost) I can take it to 6500. If I keep the rpm low(4 to 5000) I can hit 12psi boost. Other than this the car runs OK, the mileage has dropped a little(3mpg). Now the...

I have been reading the forms and I think I know the answer but I would like to confirm. When you add a Walbro fuel pump why do you do a 12v mod and Why do you drill out the "J" tube? Thanks

I have checked FAQ and haven’t found the answer to my problem. I have an intermittent engine miss. Most of the time when it happens I am about 3000 rpm steady (freeway driving). It acts like you shut off the engine and turn it back on. It happen twice this morning after 10 to 15 minuets...

I am looking to buy a jdm engine, I want to be sure it is a 7MGTE. Are there any identifying marks, on the block, that would identify it as a turbo?

I have a 88 Turbo. The other day I replaced the front brakes, rebuild the calipers, replaced the rotors and of course replaced the pads. Now when I brake, I have a vibration, in the steering wheel, in the front end, I can feel it in my seat. I don't see any shimmy in the steering wheel...