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Old Nov 25, 2002 | 05:20 PM
  #1  
IROC_5796's Avatar
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From: Canada winnipeg
Car: '91 vert RS, '82 Z28
Engine: TBI 305, TPI 350
Transmission: Auto, 5 speed
MAF question

I was just thinking of making a cold air intake that is plumbed to either side of the rad and useing 2 MAF sensors on either end before the air filters. Can 2 MAF sensors be used, I dont want to convert to speed density yet as I cant find a cheap computer. I heard about getting more flow with MAF screens removed.

Is this a good idea or am I better off to continue looking for a Speed Density computer? Whats your thoughts.
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Old Nov 25, 2002 | 06:35 PM
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Cruzin Kaz's Avatar
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From: Welland, Ontario, Canada
Car: 85 Monte Carlo SS...
Engine: T.P.I L98.
Transmission: TH350
Axle/Gears: 3:73 Posi
Ummm I'm not really sure, but.... I really don't think you need 2 MAF. Either make a T pipe just after the MAF and then plit off with 2 pipes to eihter side of the rad. Or run just the one pipe and make things a whole lot easier on yourself. As for the question can you run 2 MAF I don't think so, What's the point of it??? I could be wrong though. Hope I've helped?? The attached pic was a test fit for a dual set up on my Monte, I didn't like it though.

Keiran
Attached Thumbnails MAF question-picture-192.jpg  
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Old Nov 25, 2002 | 06:48 PM
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For the cost of a second MAF, you could buy all the parts to swap to Speed density and all the DIY PROM equipment to tune it.

Not to mention That it won't work without some serious modification that I wouldnt touch with a 60 foot pole.
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Old Nov 27, 2002 | 01:29 AM
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From: The State of Hockey
Car: 1987 Trans Am GTA
Engine: Miniram'd 383, 24X LS1 PCM
Transmission: TH700R4, 4200 stall
Axle/Gears: 9", 4.33:1
I can't see where you are coming from with the idea that swapping to SD is difficult or all that expensive.... The ECM (sometimes with the proper V8 Memcal even) can be had for $30 to $60 and the Map sensor, connectors, knock sensor, and possibly the Memcal if you need it, will only run you another $100 at most if you went with all new stuff. I went with a new knock sensor and got all of the rest used and spent a whopping $100 on the entire swap! As someone who has been there and done that I can tell you that the benefits to going to the SD system are a-plenty. Things such as flexibility for tuning and ease of CAI designing come to mind.... Or how about just more robust and up to date programming that results in smoother driveability. Do some looking around and searching on the PROM board if you want to know the details on all of it, but anybody that has done it will tell you that it is most assuredly worth it.

Oh yeah, I have yet to hear of anyone successfully running two MAF sensors on a TPI..... You are talking about some SERIOUS coding changes in the PROM or possibly even the hardware of the ECM. Just swap to SD already ....
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Old Nov 27, 2002 | 12:17 PM
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From: Canada winnipeg
Car: '91 vert RS, '82 Z28
Engine: TBI 305, TPI 350
Transmission: Auto, 5 speed
Originally posted by Matt87GTA
I can't see where you are coming from with the idea that swapping to SD is difficult or all that expensive.... The ECM (sometimes with the proper V8 Memcal even) can be had for $30 to $60 and the Map sensor, connectors, knock sensor, and possibly the Memcal if you need it, will only run you another $100 at most if you went with all new stuff. I went with a new knock sensor and got all of the rest used and spent a whopping $100 on the entire swap! As someone who has been there and done that I can tell you that the benefits to going to the SD system are a-plenty. Things such as flexibility for tuning and ease of CAI designing come to mind.... Or how about just more robust and up to date programming that results in smoother driveability. Do some looking around and searching on the PROM board if you want to know the details on all of it, but anybody that has done it will tell you that it is most assuredly worth it.

Oh yeah, I have yet to hear of anyone successfully running two MAF sensors on a TPI..... You are talking about some SERIOUS coding changes in the PROM or possibly even the hardware of the ECM. Just swap to SD already ....


I was just thinking about getting more air flow, it was just an idea. I live in canada and its very difficult to find a camaro newer than 84 in an auto wrecker, nevermind finding a 90-92. I would just buy a speed density computer but i cant find one, im not the most trusting person when it comes to ordering things from the states thanks to third gen resource screwing me over, so now im trying to find things locally. I triied looking for a 98 camaro with rear disc brakes to do that swap and the guy at the wrecker laughed at me, and that was a wrecker that dealed with all the bigger wreckers across canada.
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Old Nov 27, 2002 | 02:29 PM
  #6  
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From: Shakopee, Mn
Car: 89 Iroc
Engine: 305TPI
Transmission: T5
You do not need to pull the computer out of a 90-92 F -Body in order to have SD. All you need is a 730 ECM. I think a friend of mine got his out of a 91 Corsica or you can find them in a Chevy 2.8 V6. Good Luck.
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Old Nov 27, 2002 | 03:16 PM
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You can find them on Ebay all the time.

Hell, I have one here I would be willing to sell you if you can't find one anywhere else.

The memcal Can be had from the Dealer. We just orderd one yesterday.
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Old Nov 27, 2002 | 06:02 PM
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From: The State of Hockey
Car: 1987 Trans Am GTA
Engine: Miniram'd 383, 24X LS1 PCM
Transmission: TH700R4, 4200 stall
Axle/Gears: 9", 4.33:1
Drkhrse is correct... well, mostly. The "Speed Density" ECM to which we are referring to has two formats. One is sealed to keep the elements out and made to be mounted under the hood. That one is the 727 (01227727) ECM (also used in L98 equipped Vettes with SD, 90-91). The other one that most people on this site refer to, since it is the one that came in F-bodies, is the one that is not sealed for external mounting is the 730 (01227730) one. Both have the same hardware (essentially) and the same abilities. The only difference other then the outside appearance of the case is the connectors. The 727 has 4 square connectors and the 727 has 3 rectangular connectors. Either will work just fine for operating your engine with the proper Memcal.
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