ok well Ihave a 89 Iroc Camaro. Im having alot of problems with my car. My maf sensor keeps going bad so im thinking of swapping to speed density since my wiring harness is so rigged from previous owner. What is all involved swapping to speed density. I looked at the tech article and i dont under stand some stuff. The tech article makes it look really hard to do. Can i just get a harness from pain less for 90-92 TPI and then find a computer? I heard ai can use a v-6 computer? If I can what years can I get it from. I know iwill need achip but what else is really involved and is it worth it.

 

btt

 

something doesnt sound right there. you shouldn't be going through MAF sensors. have u replaced the MAF power and burn off relays yet? if not then there is your problem. Are u taking the screens out of the MAF's? if ya are id stop that too until u figure out the problem.

 

well I replaced the relays but the engine is running bad and sometimes it will back fire through the intake and blow out the screen and sensor. I want to switch to speed density though.

 

When does the backfiring occur?

I'm not so sure that changing to Speed Density will fix this problem. Need to figure out why the backfiring occurs before switching over.

 

its part of the throttle response...its back fires at intake cause of not enough fuel.

 

89,

You are correct. Lean backfire will take out a MAF sensor in short order. That's why there are screens on BOTH ends of the Bosch sensor.

If you're tired of buying MAFs, check into the Wells SU-145 replacement. It uses a thick-film sensing element instead of the fragile hot wire. They can be found for less than $200.00, and most places offer a lifetime warranty on them. They flow better than the Bosch units as well, adn are 100% compatible with the ECM. The design of this sensor is patterned after the Hitachi-type LT1 sensor.

It's worth checking out. After you get that sone, you can work on your lean issues.

 

You mentioned that the wiring harness was butchered. I would post an ad in the classified and find a replacement rather than try fixing the problems you're having with yours.

More than likely your problem is caused by some of the wires shorting out or touching each other. The harness is a good starting point......

As far as MAF's themselves go, I have never seen anyone have problems with continually damaging them. The harness has to be the culprit.

Switching to SD may solve your problems but having to deal with its inadaptability will be a whole new issue to deal with afterwards.

 

what do u think I shoul do guys? The engine is mostly stock except dynomax cat back and k&ns the only things I plan on doing to the engine is headers and maybe a cam I dont know yet. Also I will put a higher flowing base plate and runners. Should I stick with the Mass air flow or switch to speed density?

 

Id personally get a new wiring harness and check my sig!!!!

 

sweet io think im gonna look into that MAF sensor

 

i need a new wiring harness though. what kind should i get? painless wiring harness? SHouldI get the extra lengh one? Does this run in the stock location. i Have looked in junk yards for a harness but cant find one.

 

btt