I have a 88 GTA with the stock 350 TPI. Is there any chip that will bypass the MAF sensor? The MAF sensor now is not connected, and of course the car is running very rough, even when idling. Thanks for the help.

Mike

 

You NEED the MAF unless the car is going to be converted to the OTHER system of Speed Density... but that is a project...

I can't imagine why you have it disconnected, but get it hooked up ASAP.

PS- Welcome to the boards! Where are you from in NJ?

 

to understand what you are doing let me explain it a little bit for you. your computer operates in 3 modes. open loop, closed loop, and cold start enrichment. when you first start your car, the first mode that is engaged is enrichment to warm the engine up. once the engine is warmed to a certian temp, the computer puts the system into closed loop operation. closed loop uses all the sensors like the mass air flow sensor, throttle position sensor, oxygen sensor, coolant temp sensor, and all the rest of the sensors to calculate exactly how much fuel you need to be using for a certian situation and throttle position. open loop will happen when one of your sensors (like your MAF) is messed up or unplugged. the computer will start using preprogrammed fuel charts to "guess" how much fuel is to be used for a certian situation. and 99% of the time its not 100% correct. open loop will dump fuel and you will get horrible gas milage. get yourself a new mass airflow sensor ASAP, bypassing it with a chip is not an option if you ever want to run normal again. btw, running in open loop will decrease power output and it will waste more fuel.

 

I'd say forget the MAF sensor and convert to SD. Yes, its a chore, whoopitee do, its pretty simple and anybody that can follow Mike Davis's conversion page and has a little bit of soldering experience can do it. Plus you can convert for about 100bucks total(junkyard ecm, new GM memcal(will need programming), junk ecm header for adapter, and a map sensor from the millions of cars that used the same one) or you could spend 150-200+ dollars just on a MAF sensor and hope that fixes the numerous pains that the 165 system has caused me.


Brendan

PS. I'm not biased or anything

------------------
1987 IROC-Z L98,SR,EB 6085's,LPE 219/219 Cam, Crane 1.6RR, EB TPI Base, 58mm TB, Stock T5, 30lb SVO, AFPR, K&N, EB TES, Catco Cat, 3" Borla Cat-Back, Accel cap,rotor,distro/other crap, Aluminum DS, 94 Disk Rear, Adjustable Prop Valve, Precision 3.73 Gears, Weld in Sub-Frame Connectors, Hotchkis LCA's, KYB Shocks/Struts, Poly Bushings all over the place, Moog Upper/Lower Ball joints and Tie Rods ends/Idler Arm, Big stereo, 730SD Conversion.

To see the ROC, Check out the webpage Here

 

Better put the MAF back on or theres going to be problems...

 

Hey guys,
Thanks for the help, its going to the shop tommorow.

[This message has been edited by JackedGTA (edited September 18, 2001).]