New TBI setup

[cabledawg]

I'm installing a new TBI for my wifes Burb. 88 R10 w/350. Previous engine had all stock stuff, but new engine will have tons of aftermarket things like headers, bigger TBI, spacer and Performer intake. What do I need to watch for, or tips on making this a smooth swap?

 

[sweetk30]

great info and service at www.tbichips.com. and http://www.tbichips.com/truckmods.htm

 

[Thunder]

You wil need an adjustable fuel pressure regulator, A fuel pressure guage and a good scanner or win aldl to get everything working rite.
Adding all that flow will take some tuning to make it work.
Even if you go with a custom chip an adjustible FPR and Xcanner are must haves for fine tuning

 

[cabledawg]

I have the adjustable regulator, but I'll have to scrounge up a scanner.

 

[cabledawg]

Anybody know which side of the TBI is suppy and which is return?

 

[southernspeed]

The big one is feed. Left hand one if I remember correctly (sitting in truck)

 

[southernspeed]

As thunder says, and you will need to do some data logging to get a chip burnt. You can't just up the FP without reducing BPW which your chip supplier will do based on your datalogs. Also know that although you are increasing flow it will strangle itself around 4000 rpm, it's the way the heads are.

 

[cabledawg]

I've never had this Burb above 3500 rpm's evenat full throttle acceleration, so I dont see that as being an issue. I kinda thought the bigger one would be supply, but wanted to verify. I've got the old engine out and the new one ready to go in. Will a full diagnostic machine work for tuning? The shop I'm using has a full blown diagnostic machine. I'm sure if I'm pulling codes that this would work, right?

 

[southernspeed]

It'll read codes but tuning needs a .bin editor like Tunerpro or tunercat. If you're going to emulate (THE best way to tune) you'll need Tunerpro RT or TCrt.

 

[dyeager535]

Engine RPM is irrelevant. Lean is lean, at any engine RPM. Load and high throttle is where the problem comes in.