99 ecu tuning?

[C3L1CA]

They all bring their cars to Shane!

You should set the timing before bringing it in to get tuned anyways.


I know in link there was a box you could check to lock timing in then you just moved the cas to get it dialed in. Not sure of you can do that with what you're using otherwise I believe there is a pin on the firewall you can ground that will do the same thing.