1996 3100 to 1998/2002 3400 top end

[oklahoma]

OK, so for the MAF... I got a 1999 3100 Buick Century MAF today. I currently have it stuck on the front of my TB; it's plugged in and the original one is unplugged. Car runs normally and throws no codes with the '99 Century MAF in so I'm hoping I can just stick that on in front of the new TB and have everything work.

[oklahoma]

Hooked my OBDII up to my car and did some tests... what I did was compare MAF readings for set TPS inputs. At idle (TPS=0) the MAFs give about the same signal. If I hold the throttle at TPS = 5 or 10, though, the new MAF gives a reading that is about 25% lower (in lb/min). Thoughts/suggestions?

[SappySE107]

I don't know if the guts can be taken out of the stock MAF and put into the new MAF but that would be the easiest solution. I don't know if DHP supports your stock computer. A 97 computer could be used but I am not sure which setup would be the best to convert to if that is what it takes.

[oklahoma]

Well, those were the lines along which I was initially thinking. 1994-1996 A-body MAF 'guts' can be bolted onto an earlier A-body MAF 'body'--which was separate from the TB. I visited the JY today and looked at the earlier 3300 MAF 'bodies' I had considered before. Turns out they have a very small opening--the 3300 TB that the 3300 MAF body bolts up to has a very small throttle plate. That setup seemed restrictive to me.

Bottom line, yes, I went ahead and grabbed the 1999 W-body MAF today. Conveniently, I'm living with my parents for the summer, and so I have my little sister's 1996 3100 Grand Prix readily accessible. It has the same MAF-body design as the later W-bodies, so it bolts right up to intake hose at either end, but the signal may be more properly calibrated since it's also a 1996 3100. I'll try that tomorrow and if the numbers look good I'll trade the 1999 unit for one out of a 1996 W-body.

[oklahoma]

1996 Grand Prix MAF had same issue as 1999 Century MAF... beginning to run out of ideas on the MAF.

[bszopi]

I really think that the cars with the MAF built into the TB are unique. Pretty sure its been discussed on here before.

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[oklahoma]

Yeah, I'm beginning to see what you mean.

It looks like the only way I could possibly make this work is to saw off the front of my current TB--the part where the MAF is built into--and attach it to the front of the new TB.

My question is, would such a setup likely flow better than just keeping the old TB? If anyone thinks so I'm willing to give it a try.