Stroked 388

i know this maybe asking a lot but would any of u have a tunercat bin file that your willing to share. would like to compare it it mine and maybe copy some of the tables to mine. having a hard time tuning my fueling tables i have attached a list of mod done to my 94 lt1. thanks for any and all help

2xLS1

iTrader: (25)

No you haven't. (see bold)

What fueling tables? Are you still using a MAF sensor? What are you using to datalog?

Stroked 388

Sorry I uploaded it but don't know why it didn't attach. Yes I'm running a MAF and loging with datamaster and tunercat. I'll try to attach my mods when I get to my laptop. I'm trying to get rid of my split blm rich on left and lean on the right Thanks for responding

Stroked 388

I hope my mod attachment works this time

joecar

Your BLM/LTFT split is due to a physical problem, like an exhaust leak, intake leak, injector leak.

Stroked 388

I checked for a intake leak with some starting fluid to c if the idel went up and it didn't if there is a better way let me know. As for exhaust leak a can't hear any. Injectors I don't know how to test to c if they are leaking

2xLS1

iTrader: (25)

This. ^

Smoke test is the only reliable way to find an intake leak. You can even use a smoke machine to find exhaust leaks too. How far apart are the BLMs? And your attachment is upside down.

Stroked 388

They are +50 on the left and - 25 on the right. Ya sorry about the attachment laptop took a crap hat to take a picture with my phone. I will find a way to smoke test the intake. Thanks for the information I was about to the point to pull my hair out

2xLS1

iTrader: (25)

+50 and -25 is not a tune issue. On a gen3+ vehicle that would indicate crossed O2 sensors left and right.

Stroked 388

What do you mean by crossed o2 ? Do you mean the wires are on the wrong sides ?

joecar

Yes, that's what he's saying.

Stroked 388

I will look in to that I had them all taged when I pulled the motor. But heck you never know if I messed them up on install. Thanks a bunch guys for the help. Can't wait to get it out on the road

ElecTech

Your split BLM are likely a direct result of your throttle body's physical characteristics and the design of the LT intakes. You need to drill a bleed hole through the front idle passage into the rear passage allowing for base idle air to pass through into the idle circuit instead of opening the throttle blades to allow idle air. The bypass allows you to close the blades and will reduce or eliminate the split in BLM. Study the stock TB to get a better idea of what I'm telling you.

A good test to see if this is the issue is if you hold the engine at 2000 rpm and the fuel trims are closer, then it likely isn't an O2 or air leak issue.

Stroked 388

I have been working in the TB IAC counts would not come off 160 I'm up to a 7/32 hole now. IAC counts are down to 90 now but labtop went down so I use datamaster to view it but I will check the blms at 2000 rpms to see were they are at. Thanks for the information looks like I have a lot to look over thanks again