Like a rear o2 sensor? Or what?

 

I used the low a/c pressure switch. But this can be using the egr system as well.

A/C low pressure sensor method-

In the scanner, right click on the table display, and click insert. Then under user defined, click configure user defined. Select a open space (mines on slot 4) name it whatever you want, select AFR for sensor and units. Then for the function, insert this pid: " ([PID.7101]/.332)+7.35 ". This is setup for Innovate mtx-l wideband. If its off from the gauge display you'll have to play with the last number in the function. Then connect the 0-5v data logging wire from the wideband and connect it to the red and black wire from the low a/c presure switch. You'll also have to insert "AC Pressure" in the table for the function to actually work. I figured that out the hard way

The egr method is basically the same, the pid will be different and you'll have to find the correct wire to connect the data logging output to.

 

Wow. Holy ****.
does pid.7101 tell the ecm to read the voltage coming in on the low pressure ac switch? And the rest math to get the correct # to display?
I use my ac but in a pinch...
My car didnt come with egr but could the input still be there.
I assume I cant use the rear o2 cause its 0-1 volt?

Thats for the pid info. That will be awesome. Would suck to not be able to log my new wb

 

Thread on HPT's website with some details, lets you log through EGR. I haven't tested.

http://www.hptuners.com/forum/showth...nd-through-EGR

 

I can't believe how long this took. 14 hours

 

Festive !

 

I'm Gonna wire the WB up to the ECM so I can log and tune real time today.

 

Very cool . Love seeing people give things a try instead of standing behind a crowd of onlookers shooting it down because it's not what they're comfortable or familiar with.

 

Here are a few short logs if anyone wants to see them.

I need a fuel pump bad. My pressure tanks <40# up top. Should I do an external Bosch 044 or an intank Walbro 450?

 

 

looks like an .890 is about a 12.5.
and an .870 is about a 13.1

I used to tune for .87-.88 Not bad at all for NB tuning.

 

Awesome thread, thx for posting and PROPS for trying something different. Subscribed!

 

I would try to shoot for a little bit richer than 12.4-12.5 with a blower. I would try to get it to mid high 11s honestly.

Be careful.

 

Fuel pump?
External Bosch 044? How loud is it?
Internal Walbro 450? How much trouble with the straw or 30r10 hose?
or BAP?

I gotta do something next week.

 

How about dual walbros in the stock bucket. That will give you room to grow. I used the stock evap line for a return. You can also get 97 98 vette rails that have a return.

 

Sweet! Glad you were able to make it work.

Here's a plug and play walbro 430 lph setup:

Wiring harness - http://www.racetronix.biz/itemdesc.a...WH-017&eq=&Tp=
Bulkhead - http://www.racetronix.biz/itemdesc.a...CS-028&eq=&Tp=
Intank harness - http://www.racetronix.biz/itemdesc.a...WH-029&eq=&Tp=

It would be interesting to see how it works on your return fuel setup with the stock regulator.

 

I think im going to do that. And while im in there ditch the reg and put one on the fuel rail.
But...its plug n play wiring not install and the contact info for racetronic is total bs. How that hell can one email a www.xxxx/ something
I dont trust them

 

I bought this pump and an 8.75" straw and some submersible hose from APE. I got the smaller Walbro turbine pump because I'm going to attemt to use the OEM wiring. It draws 15A and the oem circuit is on a 20A fuse. But I just checked the wiring and it looks like 18 gauge. Damn. If it melts I'll fix it then. Screw it.

 

Ok, I won't be screwing it, it will be screwing me.



So, I went ahead and next day air the wiring harness kit, tubes, socks...from Racetronix. Thanks Ray.

 

I did a short thread on the fuel pump trap door here https://ls1tech.com/forums/fueling-i...en-f-body.html