Ok this one has me stumped.....I'v seen pics of TPI engines with a K&N Filter rite off of the Throttle Body, sounds like the perfect solution to the lack of air getting into firebird engines....but WTF where would you put your MAF sensor. I'v been trying to figure this one out for months

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1986 Trans Am, T-Top, 305 TPI, Flowmaster 80 series. Much more to come in July.
[*]Sound System: Dual 12" Ground Zero Nuclear Series 900 watt RMS subs in custom box made to fit the rear well, Only 500 watts running them though, Pioneer Head Unit and Rockford Fosgate wiring.


AOL screen name= madbiker1

 

those are for speed density systems....

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Corry Lazarowitz
clazarow@voicenet.com
clazarowitz@hotmail.com
1987 Pontiac Trans AM (GTA?) 350 or is it a 305?! TPI
SLP 1 3/4" headers, 3" cat back (stock cat
MSD ignition.
MSD Blaster SS coil.
3.73 Rear end gears
Accell 8.8 Wires
Bosh +4 Spark Plugs (Don't know if they really help but hell!)
Holley AFPR
Race Built Automatic trans ('vette servo, shift kit, tightly packed clutches)--just needs titanium gears now!
Newly gutted cat (the car gutted it's own cat!)
Hypertech Chip (Just found out I had it! :eek
More soon when funds are avail...

 

How hard is it to go from MAF to Speed Density?

 

Click here and also search in that "folder" for more info

https://www.thirdgen.org/messgboard/...ML/001308.html

 

"Are you sure you wanna do that?" Yeah, you see, THAT'S gonna be a lot of work..."

Don't swap to speed-density on your stock 305. You'll be really disappointed as soon as some of theose "Much more to come in July" modifications start happening.

What you need to consider (not necessarily do, but at least consider) is an air cleaner modification and a K&N filter in the existing housing. The K&N filter part number is E-0890, and I got mine for $24.00.

The modification for the air cleaner is outlined in this file:

Air Flow.pdf

Getting adequate flow to your engine is easy with a few simple tools.

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Later,
Vader
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"Let the bodies hit the floor!"
Adobe Acrobat Reader

 

FyrBrd,

Since you have a similar vehicle to my '86, have you checked the ECM/PROM lately? There was a TSB regarding the PROM and some faulty programming. Thsi wasn't discovered until October of 1986 - well after the last car was assembled and shipped. Even some early '87 models got the "bugged" PROM. The replacement PROM is offered from GM for about $50.00. To me, it was well worth it. The mid-range mixture is slightly enriched, taqrget idle speed was increased 50 RPM, the TCC lockup point was changed from 28 MPH to 41 MPH, and there is no fuel cutoff programmed at 118 MPH. There are several other enchancements, including a wider range of acceptable inputs from the MAF and oxygen sensor before setting a DTC. Code 44 errors are almost eliminated unless you truly have a mixture problem. My car runs totally different with the upgrade. It's even better than the HyperTech paperweight I had installed in it before I discovered the new GM PROM.

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Later,
Vader
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"Let the bodies hit the floor!"
Adobe Acrobat Reader

 

Hmmm I'm on my way to check out the air cleaner mod now....none of this will be on my stock 305, last week that blew, It will be goin on a '91 L98 that I ordered.

Vader: do you recomend getting the GM replacement over the Jet Six Pack, Im looking forward to ordeing that for the L98 this week.