VRFPR with 16197427 Strategy

[Loyd]

Hey whatif3387. how did you solve the return line problem , a retrun on the tbi and on the VRFPR. this may help solve my problem of not enough fp at wot above 4k

[whatif3387]

Hey whatif3387. how did you solve the return line problem , a retrun on the tbi and on the VRFPR. this may help solve my problem of not enough fp at wot above 4k

I can take a good look when I get home as I havn't been wrenching on or driving the truck in well over a year since moving but from what I remember my VRFPR is in line before the the TBI unit and has it's return plugged. The tbi regulator is modded with a block off plate and the return is from the TBI return like it was from the factory. So fuel flows from sending unit to the aftermarket VRFPR to the tbi injector pod then out the factory return back to the tank. I also upgraded to AN line and fittings when I did this.

[CDeeZ]

I wonder how this guy was able to use a VRFPR with a stock style ECM. He lists 8746 as the ECM he was using. Looks like it's similar to the 747 I think...

http://z28boy.cz28.com/throttlebody.htm

Also found this thread pertaining to this. GM used a VRFPR it seems.

http://www.gearhead-efi.com/Fuel-Inj...sure-Regulator


Dave, did you find after playing around with this that the 7427 just simply will not accomodate a VRFPR whatsoever without significant changes like you mentioned?

[stew86MCSS396]

Food for thought...I was poking around an '8062 and found a BPW EGR ON table so provided EGR is physically disabled, commanding EGR on all the time, possible to have VFPR follow the fueling strategy based on this table modified as it applies.

[tayto]

I'm pretty sure Fast355 has used a VAFPR on the 7427. This would be going back 8-10 years when he use to run TBI on his van. He posts here and I remember him posting lots on thirdgen.org. The more I think I believe it was with the MAF code that dimented24x7 wrote. I lost interest in my TBI project a long time ago so my memory is fuzzy.