TBI Mods

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TBI Mods

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Blazer Forums >> Mechanical & Maintenance >> General Tech Help >> 1st Gen (1983-1994) Tech >> TBI Mods

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TBI Mods - 6/13/2008 8:39:18 AM

mr.vls

Posts: 78
Joined: 4/2/2008
Status: offline

I installed a CFM Fuel Pressure Gauge adapter fitting, Fuel Gauge, Injector Pod Spacer and an Adjustable Fuel Pressure regulator. My fuel pressure was at just under 9 PSI and GM Specification is 9-11 PSI. I currently have the regulator set at just under 12 PSI and my car is running the best it ever has and I am the original owner. The installation of the Fitting and Gauge was a little tricky since the extra length of the adapter made it necessary to bend the fuel line and not kink it. But I was able to get it all installed and I am very happy. The adjuster knob for the fuel pressure regulator was too large to fit between the vacuum port and the fuel line return. So I ground off the knob and in order to adjust I have to remove the TBI Fuel Pod cover, adjust the regulator and re-install, check the pressure and if it is not where I want it repeat the same process until the pressure is set to the desired level. CFM recommends 13.5 PSI with modifications and since the only modification I made is the injector spacer the car is running great at just under 12 PSI.

< Message edited by mr.vls -- 6/13/2008 8:49:12 AM >

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1989 S15 Jimmy (DD) with 388K Miles, GM Factory Rebuilt Engine/Tras. New Paint, Headliner, all Suspension Bushings, Eddlebrock Waterpump/Shocks, Pioneer Head Unit/Speakers. Vehical is in Great Shape. Original Owner.