Converted from TPI to Ramjet - Now it's way too rich???
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Junior Member
Joined: Jun 2004
Posts: 4
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From: Aubrey, TX
Car: 1966 Plymouth
Engine: 520" RB
Transmission: 727 Torqueflite
Converted from TPI to Ramjet - Now it's way too rich???
I just converted my s10 from L98 TPI to GM Ramjet injection and Vortec heads. I am still using the L98 ECU. Now it is running way rich. When I plug in my wideband it shows to run around 12:1 - 11:1 at wide open trottle. It just has stock LT1 injectors. I also tried a set of 19 lb Mustang GT injectors and it showed the same condition. Fuel pressue can be adjusted from 20 lb - 45lb without much impact.
FYI... the Ramjet uses different TPS and MAP than the L98. I just cut the harness and spliced the wires.
FYI... the Ramjet uses different TPS and MAP than the L98. I just cut the harness and spliced the wires.
TGO Supporter
Joined: Oct 2002
Posts: 9,067
Likes: 1
From: Saskatoon, SK, Canada
Car: '83 Z28, '07 Charger SRT8
Engine: 454ci, 6.1 Hemi
Transmission: TH350, A5
Axle/Gears: 2.73 posi, 3.06 posi
12-11 AFR actually sounds about right for WOT running to me, whats the problem? 
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Sanjay
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Aug 12, 2015 03:41 PM
