Alright guys I'm trying to get my single turbo 351 dialed in. I'm having some trouble. A buddy of mine built the tables and all. Car idles and all, but you do some revs it stumbles and cuts out. I've drove it around some and with a load it cuts out. The car starts and idles good. Just when hit the gas it stumbles. I can see my air fuel dips down to the 10s.

I'm new to all this tuning and just trying to figure it out lol


My setup:
Microsquirt ecu
358w
Trickflow 170 heads
F303 cam
80lb injectors
Speed density 3bar gm bap
340lph fuel pump
70mm turbo
Pro Bullitt dizzy

Any help would be appreciated!

 

look into you accel enrichment settings....if you press the throttle extremely slow does it run ok?

get a log of this occuring as well and post it up.

 

Look for signal errors. There is an "out of sync" count oyu cna log. Pretty much tells you if the pickup is losing signal.

 

Here are 2 data logs for today. This is just running in the garage. The file ending just .14 is cold start to warm up. The .142 is fully warmed up

 

What my tune looks like

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Why do you have more than on VE and ign table listed? Just use one. Make sure it's scaled for your MAP range. a few of the ones you posted stop at 100. Should go up to 255 or so.

 

Opps lol I didnt mean to post the fuel.jpg. Im using the Fuelve pic. On the ignition table its split up on purpose.

I did find out what was causing all my issues. So I pulled out a plug and found out I had to wrong plugs in. For some reason I had autolite 23s not 3923s. Im running trickflow heads. So After replacing all the plugs it ran 100x better.