Turbo fox microsquirt help

Jtoepper93 · Mar 30, 2020

Hey guys i just got my turbo kit on my fox and i was messing with the tune alittle, but was also having problems with mechanical things as this is a fresh build. So i was reading through one of the forums on here and grabbed a tune i seen and tweaked it to work with my injectors, just to get the car running. Its running now, but im having a heck of a time getting it to idle. I had it idleing, but the only way was messing with the set screw on the throttle body, and it would idle at like 1700. Since then ive been trying to get it to idle lower, and now im back to not idleing again. Any help would be appreciated, thanks in advance. I would attach a datalog, but i cant keep it idleing enough to make it worth looking at.
Mods:
Stock 302
F cam
Trickflow intake
60lb ford racing injectors
340 lph aermotive pump
76mm turbo

90sickfox · Mar 30, 2020

In settings try switching IAC to inverted. This is what helped me with mine. @a91what handles just about all of my tuning. My knowledge is limited.

a91what · Mar 30, 2020

Very cool, I am taking a break from work for a moment and will take a look when time permits. If I dont respond by tomorrow just tag me again and I'll push you to the top.

Jtoepper93 · Mar 30, 2020

90sickfox said:
In settings try switching IAC to inverted. This is what helped me with mine. @a91what handles just about all of my tuning. My knowledge is limited.

Thanks, I'll give that a try tomorrow.

a91what · Mar 31, 2020

The tune you grabbed looks to be for a microsquirt. I need to know what ECU you are using to help

Jtoepper93 · Mar 31, 2020

a91what said:
The tune you grabbed looks to be for a microsquirt. I need to know what ECU you are using to help

I'm using a microsquirt from efi source

a91what · Mar 31, 2020

Ok I will assume you have not verified base timing yet, if you have not please do so. this tune file has the base timing set to 14*. I suggest that you change the timing offset to 10* base advance.

You are attempting to use a tune setup for a completely different build it looks like.

Jtoepper93 · Mar 31, 2020

a91what said:
Ok I will assume you have not verified base timing yet, if you have not please do so. this tune file has the base timing set to 14*. I suggest that you change the timing offset to 10* base advance.

You are attempting to use a tune setup for a completely different build it looks like.

I did verify base timing, I set it to fixed timing and verified 15 degrees with my timing light. Do you suggest I start fresh?

a91what · Mar 31, 2020

Yes i do, I will shoot you a better base tune here in a minute

Jtoepper93 · Mar 31, 2020

a91what said:
Yes i do, I will shoot you a better base tune here in a minute

Okay thank you, sorry I'm new to this. Ive been trying to read through what all the settings do and familiarize myself with the software.

a91what · Mar 31, 2020

This is just a starting point to work from I set the base timing value to 10* in this tune

Jtoepper93 · Mar 31, 2020

a91what said:
This is just a starting point to work from I set the base timing value to 10* in this tune

Okay thanks, I'll get it loaded in. So I'll need to adjust the offset to verify 10* or do you suggest to just turn the distributor? Last time I just turned the distributor.

a91what · Mar 31, 2020

turn the distributor, I have the offset where I think it should be.

Jtoepper93 · Mar 31, 2020

a91what said:
turn the distributor, I have the offset where I think it should be.

Okay thanks, I'm about to go load it in now.

Jtoepper93 · Mar 31, 2020

@a91what heres a log i got after i verified the timing. it idled after alittle messing with the set screw. Was very rich so i started trying to lean it out in the Fuel VE table, and now it died and doesnt want to start. Sorry i suck at this, im trying to learn and make small adjustments.

Jtoepper93 · Mar 31, 2020

So somehow my required fuel settings got messed up, i compared the base tune you sent vs what i had after logging it. somehow that got changed. so i fixed that and got it running again. Now it idles much higher than before, but AFR is better than before. The first log i was getting smoked out of my garage lol. Tried adjusting the set screw down, got it down to where it was oscilating, then went up just to keep it idling because it was wanting to die if i went any lower. Hopefully these logs help.

Jtoepper93 · Mar 31, 2020

So after some adjusting and learning the software more. I opened the log on megalog viewer and used the VE analyzer twice on two seperate logs and accepted the changes to the ve table, alittle lean still, idles about 1300 right now. Ive been saving each tune before i make any changes so that i can go back if i make a change the car doesnt like. Sorry for all the posts, just trying to learn and get the car dialed in.

vc10786 · Oct 15, 2021

I just found this thread and I'm delving into tuning a Microsquirt on a similar setup... Just wondering if you ever got the car dialed in!?

Turbo fox microsquirt help

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