If I'm using a SAFC ll do I even need to use a TT ECU?

[LVA3KGT]

Originally Posted by Tool Man

Stock TT injectors.

What is your HP/TQ goal?

You don't have to get bigger injectors if you don't want to, but if you want to get the most out of those 13Gs, it is probably a good idea to at least consider a set of 450s. Might want to consider looking at a hotwire kit for your fuel pump too.

To you original question, I can't think of a reason NOT to go with a TT ECU. NA ECUs were designed for NA cars.

[Kibwe Walker]

Run the TT ecu.

The NA ecu is programmed for the stock NA 210 cc inj's. When you correct for anything more than 360 cc inj's (stock vr4 inj's), such as going to 450 cc inj's thats more than 50% correction values and your timing will be very advanced.

Save your self the headache and just run the TT ecu and fine tune with safc2

[94ATXVR2]

If your going with 360's then definetely the TT ecu will be a great fit and a much easier tune. I thought maybe you were going a little bigger for the 13g's so i gave my input on what my 525's are like. But for sure if you have the tt ecu and its not alot of trouble then use it you will be happy in the long run especially if you ever try to max out your 13g's.

And like kibwe said it will advance your timing IF you have to take away alot of fuel. But i ran 525's on the n/a ecu for 2 years but i had to ADD a ton of fuel. Its weird how the n/a ecu dealt with boost. The tt deals with boost alot better and your high throttle setting will be like they should. So run the TT ecu because if i would have had the chance to run it right away i would have because it is the best option.

[green-lantern]

Originally Posted by 94ATXVR2

Did you really? I have to lean out my high settings (like -25%) and i am at the 400whp mark. And i have to richen up my low throttle. I have 525cc injectors by the way. What are yours? 360's?

To the OP, what injectors do you plan to run with the 13g's.

yes 360s. at idle and just cruising it was rich then at WOT I would knock.