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  #61 (permalink)  
Old 01-26-2012, 02:53 PM
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62 Vette L-98 TPI & ZF 6 speed
 
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Originally Posted by blight
obd1 ecm ( i have a 86 iroc ecm) with the moates ostrich. look into the ostrich!
So you plan to use MAF??

Russ

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  #62 (permalink)  
Old 01-26-2012, 09:04 PM
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Quote:
Originally Posted by Northstar T
So you plan to use MAF??

Russ
no i don't plan a maf- i have that entire harness- i plan to switch to a map. I have been told the 7730 is the fastest obd1 gm ecu though...
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  #63 (permalink)  
Old 01-26-2012, 11:43 PM
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Originally Posted by blight
no i don't plan a maf- i have that entire harness- i plan to switch to a map. I have been told the 7730 is the fastest obd1 gm ecu though...
You lost me (easy to do ). the 86 Camaro used the 7165 ECM which was for a MAF system. 90 - 92 used the 7730 (7727 in Vette) and was a MAP system. what did I miss??

Russ
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  #64 (permalink)  
Old 01-27-2012, 08:18 AM
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Originally Posted by Northstar T
early tpi maf can be easily converted to MAP, and the bolt pattern can be easily "clipped" to work on later heads. as to the RPM limitations, yes, the tpi manifold isn't going to give you max rpm, where I would expect the weber cross ram to be pretty good. they are saying 40-45 weber venturi size, but with injection I would expect better results. These are mostly decisions you need to make yourself, based on your expectations however. when you do your own designing, you have to be willing to accept failures and multiple attempts sometimes. If you must have high rpm potential out of the box, then you may want to bite the bullet and pay for the Kinsler or other pro setup.

Russ
remember when you said this?

also you never said how to convert it. would you mind enlightening me/us?

I also was just making a statement in that i have heard the 7730 was the fastest gm ecu made for obd1.
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  #65 (permalink)  
Old 01-27-2012, 10:12 AM
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Originally Posted by blight
remember when you said this?

also you never said how to convert it. would you mind enlightening me/us?

I also was just making a statement in that i have heard the 7730 was the fastest gm ecu made for obd1.
Back when that discussion was going on we were talking about using the TPI system as a basis to build an ITB system. what I meant was that the manifolds center bolt holes can be "clipped" so it will fit the later heads, and that the TPI intake system can be upgraded from MAF to MAP. however the ECM and Wire harness do need to match whichever system is used. and yes, the 7730 MAP ECM is 256K and the earlier 7165 MAF has 128K EPROMs. sorry for the confusion.

Russ
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  #66 (permalink)  
Old 01-27-2012, 10:28 AM
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so basically i need 7730 harness as well?
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