All...

I purchased a used Granetelli twin 62mm throttle body and installed it. My car is is in "limp" mode. Granetelli tech support sucks and I'm at a total loss on what to do as a next step.

I followed the directions to the letter. The tps doesn't appear to be adjustable, so I cant manipulate the voltage. The only thing that I can think of doing is to update my tune.

All ideas are welcome...

 

I never installed it when I had it. Did you make sure the spring was is right?

 

Everything went together fine. Got good spring return and fit. But I have "failsafe" and "check engine" errors; don't know where to go from here...

 

I see you have a Brenspeed tune. If I were you I would call them to see if they have run into this before. My bet is they have. You may not like their answer but you can believe it's truthful. Ask for Dave or Brent.

 

That was my next thought. If the answer is a new tune, then I'll be happy to buy it. I just don't want to keep throwing money at it and not see any results...

 

There's your problem. Send it back for a refund and buy a different throttle body if you have to have one.

 

Spoke to Dave. I need to...

Reinstall my original TB and take voltage measurements. Then reinstall the Granetelli TB and "move" the TBS to match the voltage on the original. If I can't get it to match, I'll need to remove the guide pin on the TBS so it can be manipulated to match.

I think it's more trouble than it's worth...

 

Yeah. It doesn't happen often but I have to agree with Jake (Bullit995) on this one. If you want an aftermarket TB I would stay with Ford TB's. He didn't say that but that is what I read his post to say.