MAF to MAP
Thread Starter
Intermediate
Joined: Jun 2002
Posts: 48
Likes: 0
From: Linton Indiana
MAF to MAP
I recently saw an older car at a car show with an 85 corvette engine in it. It had a K&N filter clamped onto the throttle body. I asked the owner how he managed to do away with the MAF and he told me he replaced it with a MAP sensor. I looked and sure enough it had a map sensor bolted just in front of the distributor. I forgot to ask him how he wired it up and where he ran his vacuum line. Anybody know? :chevy
Burning Brakes
Joined: May 1999
Posts: 760
Likes: 1
From: Greenwich, CT
Re: MAF to MAP (oldjoe)
To do away with the '85 MAF you need to convert the car to speed density (SD) operation. This invloves some wiring changes, installing a later-model computer (ECM), and new programming.
A number of people here made the switch to a 730 ECM and code (from 90-91 Vette). Try a search on the '730 Club'.
It's also (apparently) possible to switch to a 165 ECM (86-89 Vette) and run the 808 SD code. Try a search on the 3rd Gen PROM board for '808'.
Either way requires some work, so most people seem to go with the later model (more powerful) ECM.
HTH
Drifting
Joined: Oct 1999
Posts: 1,722
Likes: 0
From: Gloucester Va
Re: MAF to MAP (DOCTOR J)
I like the 90-91 style. If I recall the 90-91 ECM is a 16 bit system, and it thinks abit (no pun) faster. Plus the 730 ECM is a dime a dozen, and only cost $60 from auto zone. I bought a 165 not to long ago. Cost was about $130. To conver to the 730 you must do some wiring.
Thread Starter
Intermediate
Joined: Jun 2002
Posts: 48
Likes: 0
From: Linton Indiana
Re: MAF to MAP (88_vette)
Thanks for your input fellas. I had mistakenly thought this might be a simple changeover but now I think this is more of a challenge than I want to take on, given that my 85 runs pretty good as is. Maybe later if I have a problem with the MAF I might attempt the switch. Again thanks,
Joe :chevy
Joe :chevy
Drifting
Joined: Oct 1999
Posts: 1,722
Likes: 0
From: Gloucester Va
Re: MAF to MAP (oldjoe)
Right on oldjoe,
Don't fix it if it's not broke. Now If I only fallowed my own words :lol:
I always try to fix things that not broke. I hate not having something to work on.
Don't fix it if it's not broke. Now If I only fallowed my own words :lol:
I always try to fix things that not broke. I hate not having something to work on.
