I recently ordered HP Tuners. I have uploaded 2 fies one is a warm up in my driveway and a short drive to the gas station. The second file is from the gas station to my house and parked with the ac on and off. I have uploaded my tune as well just to take a look at.

My question is the rpms look kinda low when the ac is on, reason im asking is that when the as is off the are at 850 and steady. I understand the clutch engages and disengages but the tune should compensate for it right?

Second is the dealing with the warmup/ short drive, I recently had to get another transmission. I have not been able to figure out how to increase line pressure and what not. I can flash in a stock 4l60 tune but then I am worried about it not idleing right. Before it woul die all the time and now wh driving and stopping it doesnt. The only thing is startup, I need to give it a little gas to get it to start.

Thanks for any help.

The engine is a 6.0 lq4 bored .030 with 243 stock heads, asa cam, fast intake and tb 102mm, pacesetter lts, stock injectors, cai. The transmission was a tellez stg 3 4l65e with a yank tt3000, vette servo, and a shift kit.

 

Don't worry about your idle. Worry about your injectors at 145% duty cycle and your O2 745mv at 6500 rpm.

 

I know what I need to do about injectors, get some higher flowing ones. What about a higher flowing fuel pump? Wouldn't that help out? But I am I. The process of looking at some new injectors. But the o2's I don't know what that mean. Should the mV be less?

 

The O2 mv means it is pretty lean. Probably close to 13.5 - 14:1. The only way to know if you need a bigger FP is to monitor fuel pressure at high rpm. The tune determines the IDC.

 

Ok so becuase the injectors duty cycle are past max in the higher rpms, that is why the O2 mv is so high. Correct me if my understanding is wrong. I just ordered some 57lbs injectors so that should cure it up. Also I have the Racetronix wiring harness and a aeromotive 340 that will go in as soon as I get the injectors.

 

At wide open 745 MV is low, that means its lean. A wideband is the only accurate way to tune fueling but that is still really low for the 02's no matter how you cut it. Can't see the tune as I am on my phone.

 

Ok so that's low, ok understanding better. I have the NGK AFX wideband but haven't had any seat time with HO Tuners or the wideband. Also still trying to read up on how to use the program. I wish someone lived around me, **** I would treat them to a steak if they gave me some insight on tuning. Lol

 

Get some injectors in that thing before you burn a hole in a piston. Your gonna have to tune running airflow to compensate for that 102mm tb. Read Krambo's idle guide in the sticky's. Should make 400 plus rear wheel when you get the tune sorted. Narrow band o2's should read around 890mv this is usually 12.8 afr at wot.

 

Get the pump and injectors in there and then tune it with a wideband! You absolutely cannot reliably tune WOT using narrow bands...

 

Should I weld in the bung for the wideband or just take one of the O2's out? What is the best method?