STEVE PWC

Have a MicroSqurit in a S10. 5.3 single 76mm turbo, intercooler, 80 injectors, LS6 cam, Turbo 350 trans with 373 in rear. System running off crank trigger 24x wheel, no cam sensor or IAC. 3 bar GM Map. IAC was tanker off and fixed closed. Truck starts but needs help with the pedal. Running real rich afr18-20. Spark at 1000 rpm is 13 degrees. This is how its running after fixing the IAC and map sensor. Kinda lost. Truck is really rich and plugs are black as can be. Any Ideas or does anyone have a base tune I can try to get into the ball park. About to rip this out and put a Holley on it.

subeone

iTrader: (5)

afr is at 18-20? lean as ****

STEVE PWC

After messing with this crap all day and for for a few days, its time to go. Today was the last straw. Its coming out and installing a Holly Dominator. I can say like everything else. You get what you pay for. Anyone want this **** pm me. Micro Squrit with the complete harness.

atomic 6

AFR 18 to 20 is rich, wow!!!

AND, Come back from the ledge....

Those systems are simple and they work, there are many, many examples of it.

Once you figure out some of the basics of EFI, that system will be fine for you.

The high price of the Holley will not be a substitute for inexperience.

The Holley is a great system too, but it won't run very well at 18 to 20 AFR either.


Plus LS turbo with 13 degrees at idle, a turbo 350 trans, and 3.73 rear gears.....


Unfortunately, I think the headaches for you are just beginning.

STEVE PWC

Have other cars running HP Tuner with no problems or headaches. Started over and loaded in all the Info, Map, Injectors, Tables Etc. Now there a problem with the software. Locked out. Set a Email Over. Besides not a fan of Batch Firing, Wasted Spark or Fuel. We Will see on Tuesday When the Holley shows up. Some people may like it. I like the fact that you call Holley and they speak to you. Not someone in there basement with a crap load of radio shack parts helping you. HA

Also Put two Dominators in customers cars and they love it.

Also If someone is interested in the Micro Pm Me

3 window

iTrader: (1)

EXHUAST LEAK!!!!! If you're seeing AFRs at 18-20 and the plugs are black, it's showing false lean because it's so rich. I'll bet money it's drawing in air somewhere prior to the O2 sensor and it just keeps adding fuel. Secondly, 13 degrees at idle is not nearly enough timing. Run it about 22 degrees and go from there. I'm sorry to tell you, switching over to an $1800 system isnt going to fix the problems with the vehicle. As they say in the computer world, "garbage in, garbage out." I'd be looking for an exhaust leak and make sure the O2 sensor isn't any closer than two feet from the end of the exhaust. I understand this May not be possible on some turbo setups, but you don't want the O2 drawing in air from the end of the exhaust.

STEVE PWC

I will let you know when I install the Holley Tomr.

Sarg

iTrader: (6)

Or if it is so rich that it is barely firing unburnt gas will not register on the o2 sensors and will read lean. The sensor does not read unburnt gas.

windmill

iTrader: (4)

if you sell it I might be interested.

aknovaman

iTrader: (7)

Plz check your email.

STEVE PWC

SOLD!!!!! Thanks

aknovaman

iTrader: (7)

File ignition settings were all wrong. Loaded latest firmware along with my file and it works like a champ. If you guys want to use this system and need help with a starter file, let me know and I can help. Some of them out there on the Internet are whacked and make the engines run really rich at idle.

atomic 6

I have seen the same thing with some "start up" tunes.

injector dead times wrong, no cold start curves, no dwell curves, etc.

Aknovaman, you are the man.

3 window

iTrader: (1)

Amazing what they do with the correct information. Nice work.

superbean

Blocking off the IAC will have a huge vacuum issue unless you plugged the passage off...

I found that a little more base timing helped the engine idle much better.. try around 18-20 degrees...

Also what kind of Wideband? Each wideband has it's own process for calibration.. make sure it's correct...

Check for exhaust leaks, pig rich engines with an exhaust leak pre-o2 will show a false "lean" condition as there is unburned air and fuel flowing through the exhaust...

If you're using someone's base tune, I would match the same injectors as injector dead timing is huge once you're at that large of an injector... I'm assuming these are DEKA 80#? Start at 1.1ms

Also, make sure your engine has adequate grounds, if unsure, add more. One from head to chassis, one from chassis to battery and one from battery to block. I found megasquirt/microsquirt to be extremely temperamental unless there is adequate grounds as steady voltage.

aknovaman

iTrader: (7)

Bean, I think you missed my point of me saying the ignition settings were whacked in the file.

Timing was not just off a bit but they were not set correctly for any LS1. There is no way any LS1 would run with his settings. It was rich because 4 of the cylinders were not set up to spark, at all. It was injecting fuel but not sparking.

Trillwizzard

Hey man could you help me out with a tune for my 24x 5.4 Microsquirt with 55lb injectors and 7875 turbo please?

G Atsma

You're replying to a thread that died three years ago.