Burned 6-7 gallons on a 150 mile trip to buy a transfer case and 5 speed trans yesterday, 90% hiway, drove for mileage and got it, somewhere between 21 and 25 mpg. I've been adding timing in the tune...

Well that's it, the EBL thing really worked out quickly, There was an option for the analog output of my WB into the flash, so I hooked it up. The SES light was due to the IAT sensor not there, I got...

Vortec head 383 SBC 9:1cr ramjet cam, stick trans, 92 k1500 Blazer.

I got my pressure set to 24psi and vfpr hooked up to manifold vacuum, I didn't get the blocking cover yet so I just stuck the...

That is good news. If TBI works good I may look into it. It's time to jump in with what I have and start getting it to work good. even with 46mm, (.070" shy of a 7.4 stock unit) I may need to adjust...

I already have the vrfpr, thanks though and for the ideas on this. I do have to check the range on it though, it was used.

Has anyone noticed an improvement with an open spacer.

I keep hearing...

Hi, I just received my EBL setup, I wanted to improve some stuff that will effect tune in the ECM prior to starting that process, choke collar and TBI spacer design.
I'm running a TBI bored to 46mm...

Mike327, did you get an answer, I'm switching to EBL and I have the knock sensor from 1992 k1500 5.7L? I'll put an ohmmeter across it. Of course I didn't read the rules is it ok to jump on someone's...

Yeah, I'm sure I'll need more pressure, This stock chip was super rich at 20 psi.

I'm up to 9 degrees base and the more I add the better it runs, no sign of ping even running low 12.5 psi. 14.7 at cruise, around town driving ain't bad, WOT is flat. Tuning will start when the EBL...

funny you should say that I was close anyway, I just ordered it.

I just pulled the ECM and noticed I had written on it that the ECM went wacky in feb 2012 and gave three codes, one of which...

thanks, I nailed one on Ebay but it hasn't come yet. I'll update the post when it comes in.

I pulled the codes, 32 and 42 both indicate electrical faults, open/short to ground on the EGR solenoid circuit and est circuit. they live close to each other so I know where to look. neither of...

NB is heated, it was running for years without the heat, but it is hooked up now. I'm going to look into seeing if one of my outputs from the WB can be wired into the ECM for a NB adapted reading and...

I'm running a TPI pump already and have WB with dash display, 2 sensors total.

I spoke too soon on my last post, I drove the truck 120 miles to pickup the First TPI setup Sunday and the truck runs...

I picked up a complete First TPI setup, I need Vortec base so regular base for sale. I believe ONLY first runners will fit, I'll post it anyway.

Wanted, First Fuel injection Vortec base.

planning TBI TPI conversion, need right TPI serpentine bracket, air pump or eliminator, tensioner. The yards are far away from this area.

I bumped the base timing from 0 to 6 degrees and the truck liked it, much better manners. No more does it feel like it's misfiring. the WB is reading is now generally leaner since the timing change,...

OK, I'll crank up the timing to 6 base, stay with the stock chip for now, more pressure later, one change at a time. I made my regulator adjustable, but have only taken it to 22 psi. at the extreme...

Ok, I have to look up AE to see what it is.
the adapter is similar to the following, but mine is made better, custom not mass produced and centered not all the way to the back like the one I've...

Thanks,

this test was stock chip, 12 PSI, 299 AWLD.

The AFR was 12.5 on the WB on WOT and 14.6 at cruise, light tip-in and idle with crossovers, 12.3 AFR open loop fast idle.

I'll try more...

Hi,
Continued from Intro Post "learning curve".
1992 K1500 Blazer 4x4, Vortec headed SBC 6.3 stroker, TBI 65# bored to 1.930", NV3500 5 speed.
replaced ignition parts chasing misfire, cap, rotor,...

yeah I put in a heated one, as recommended by Harris, but never connected the heat, next on list.
Tri-y headers with single exhaust from Stans, high flow cat, etc.
I'm at the do it yourself point...

Thx, I'll keep that in mind.

BTW, WBO2 is installed, currently running 299 with stock chip, 14 psi w/ 65# injectors, rich in open loop, mixture not half bad in closed loop cruise. Leans a tad...

OMG there are a million 7427 available, do I need to be concerned with the four digit cal code, or is that overwritten when tuned? if they offer more range and options I think I'll grab one.

thanks for the feedback, I have 2 299s and I think a 7747, and one from a 1989 stick vehicle. I'll look into 7427 availability.