[shifterboy45]

im not sure that a GT1 can get the job done.. for later cars a ICOM or ISID would be required. a lot of independents dont like to invest in these since they are pretty costly.

[GeorgiaTech335coupe]

Originally Posted by shifterboy45

im not sure that a GT1 can get the job done.. for later cars a ICOM or ISID would be required. a lot of independents dont like to invest in these since they are pretty costly.

A GT1 has 100% calibrated injectors on my car...multiple times. Now, I can't say for certain if they are different versions of the software/hardware that may or may not be able to. But the GT1 that has been hooked up to my car over the past couple years has had the capability to calibrate my injectors.

[jpsimon]

what year is your car?

[shifterboy45]

true true,

we still have a few around the shop, but most of the work is done via ISID/ICOM -- but we arent an indy

last version of progman loaded was i believe 33.0 or 34.0 -- so yeah come to think of it, an updated GT1 with 25-26 should get the job done

[GeorgiaTech335coupe]

Originally Posted by jpsimon

what year is your car?

2008, MSD80, pre 29.2

[dzenno]

Time to call up GT1 and ask...Think it'd be good to invest in a GT1 especially because there's no retarded 3 VIN-lock like on the BT..only thing I like about the BT is datalogging which I'm not sure GT1 supports...

[enrita]

My shop has as well the YELLOW GT1 . That is connected to the obd port and to the laptop where you run BMW software. There you can do everything to the car . its just an incredible old style software and its difficult to find stuff without having a code. If you have a code it will tell you and give you different options but without it its almost impossible to find where to do something.

[dzenno]

Originally Posted by enrita

My shop has as well the YELLOW GT1 . That is connected to the obd port and to the laptop where you run BMW software. There you can do everything to the car . its just an incredible old style software and its difficult to find stuff without having a code. If you have a code it will tell you and give you different options but without it its almost impossible to find where to do something.

Enrita, any chance you could double check with them if they can code injectors with their GT1 and if they had to get any special GT1 software for that?? I'd rather just get the GT1 and have that tool instead of throwing away 2-300/each injector dealer has to code down the road..might just offer up a local service for injector coding to anyone interested for a small symbolic fee

[dzenno]

Here's a log 15.5psi showing AFR imbalance:

[enrita]

Originally Posted by dzenno

Enrita, any chance you could double check with them if they can code injectors with their GT1 and if they had to get any special GT1 software for that?? I'd rather just get the GT1 and have that tool instead of throwing away 2-300/each injector dealer has to code down the road..might just offer up a local service for injector coding to anyone interested for a small symbolic fee

My shop will check and code them if necessary end of the month. GT1 itself cannot code them. you need the BMW software which i think is the TIS to do all kind of stuff. That software is license based and expensive. you only have that if you are actually a BMW specialized shop . For example when they changed my transmission oil it was shown step by step and you could see the trans temp as well.

[dzenno]

Originally Posted by enrita

My shop will check and code them if necessary end of the month. GT1 itself cannot code them. you need the BMW software which i think is the TIS to do all kind of stuff. That software is license based and expensive. you only have that if you are actually a BMW specialized shop . For example when they changed my transmission oil it was shown step by step and you could see the trans temp as well.

No, actually TIS is offered with the GT1..

http://www.auto-tool-shop.com/bmw-gt1-dis-sss-p-28.html

[GeorgiaTech335coupe]

Originally Posted by dzenno

No, actually TIS is offered with the GT1..

http://www.auto-tool-shop.com/bmw-gt1-dis-sss-p-28.html

Everything you guys are saying about the yellow GT1 that connects to the obd and to a computer with the TIS software is exactly what my shop uses to code my injectors.

[tscdennab]

Originally Posted by enrita

you need the BMW software which i think is the TIS to do all kind of stuff.

You can find the TIS (technical info) software on eBay for $20 or so. It's just a manual showing how to do everything.

The GT1 software is the DIS (diagnostics) and SSS (software service station or so). That can be found for around $100 on ebay.

[jpsimon]

yeah many of the gt1 bundles on ebay come with the bmw TIS

[Rob@RBTurbo]

So did you install new rear O2s as well? I see you mentioned new fronts but didn't catch the scoop on the rears...

[chiaobaby]

BY THE WAY have you tried jectron?

http://www.europaparts.com/lubro-mol..._store=default

[dzenno]

Originally Posted by RobBeck

So did you install new rear O2s as well? I see you mentioned new fronts but didn't catch the scoop on the rears...

No, rear ones are still original and it is actually something I've been thinking about as well...given procede doesn't touch the signals on the narrow bands BUT the DME does if those were bad I'm wondering if they play a role at all?

[Rob@RBTurbo]

That's hands down the first thing I'd do.

[dzenno]

Originally Posted by RobBeck

That's hands down the first thing I'd do.

I would do it as well only if they didn't cost so damn much I thought it was my front O2s, replaced them, and it turned out AFR imbalance is still there...do the rear O2s play a role in STFT or LTFT?? thought they were there to just check for cat efficiency?

[Rob@RBTurbo]

Oh, maybe we are having a communication breakdown. Perhaps referring to them as primary/secondary O2s would help clear it up. So you replaced both primary O2s already?

[dzenno]

Originally Posted by RobBeck

Oh, maybe we are having a communication breakdown. Perhaps referring to them as primary/secondary O2s would help clear it up. So you replaced both primary O2s already?

Both primary (aka front or pre-cat) were just replaced a week ago, yes..

the secondary (aka rear or post-cat) are unchanged/original and have ~50k miles on them..

Given pre-cat o2s were replaced this led me to injectors in bank2 next...specifically cyl5...when I did some early RB turbo testing under boost I'd get misfires up top above 6000rpm and I saw a much greater imbalance happening than posted above (up to 1-1.5 points throughout the pull at just 14psi)...since then I got new pre-cat o2 sensors installed and a few map updates from Shiv which have improved the situation quite a bit but not solved it entirely...when I had the misfires I noticed that it'd always be cyl5 and sometimes, rarely cyl6 or cyl4, at all times isolated to bank2...

I've learned from before when I had a leaky cyl2 injector and had cold start issues that once one of the cylinders misfires the DME will quickly make the other cylinders rich and those will also misfire masking the true cylinder that has the problem...the way I got it isolated back then to cyl2 was by letting the car sit overnight, let the leaky injector leak fuel through the night, turn the car on the in morning and as soon as it misfired turned it off...check the codes it was cyl2 consistently..however, if I let the car run misfiring for a bit and checked the codes I'd see misfires in the whole bank on cyl1, cyl2 and cyl3 masking the issue...

This is why I'm thinking it "might" be just the cyl5 injector not behaving great but then again the dilemma about the injector is if it were indeed bad I'd have other issues as well and the car wouldn't put down 496whp at 18.5-19psi just the other day..

weird..

when people ask why are you looking to monitor both banks with an AFR wideband, THESE are the reasons why...car could lean out on one bank, the one you're not monitoring, and kaboom

[enrita]

Man i know exactly how you feel.. I have changed as well all 4 02 sensors and the car is much better but still not perfect. I am leaning as well on injectors but in your case you already changed all of them so i doubt is that. I would maybe consider carbon build up in your case since you have 50k. Might be good for you to do a clean up.
I guess as long as NO codes are thrown everything should be fine. Maybe your car just runs a tad leaner on bank 2 .