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OK so i have tuned a few Colorados and have all gone really well.

This Colorado I started tuning has an Airbox upgrade and the other ones i have done had the standard airbox.

Airbox has caused...

Ok so i have just had this car come in and no matter what i do it will cut at around 3500rpm to 4000rpm, Have tried different computers, coils and plugs.

Background on the car- Was a 6spd Manual...

Just had an LS1 Powered Toyota Hilux come into the shop that had already been tuned and limters have been set very high on a stock motor but it will just keep cutting out at 5500rpm.
Stock LS1 with...

It Does not seem to be pulling timing though..

I have a log from a 2009 V6 Commodore and it seems to show a lot of Knock everywhere apart from full throttle above 3500rpm.
I have. changed the full throttle timing from 3500up.

Could this be...