stillen intakes and fast intentions cbe tune?

wstar

^ That. The stock ECU is actually quite adaptable, given a little time. There are plenty of other benefits to sticking UpRev on the car (being able to set better A:F targets in some ranges for your setup, adjust cooling fans, idle RPM, play with 7AT torque map, throttle map, valet/security modes, etc, etc). But as far as the very basics that dyno tuners are after (hitting A:F targets and getting timing right), you have to get pretty crazy with bolt-on breathing mods before the ECU fails to adapt on its own, IMHO.

I'm at the outer edge of simple bolt-ons with FI's LTH+CBE, the Motordyne manifold, and Stillen G3's. The car actually runs great in terms of timing and fueling on the stock ECU. It's nice to tweak the AF targets a bit to save gas at idle and provide some extra safety margin under load (none of which really requires a dyno), and the tuning did pick up a tiny percentage of power, but it's all well within the boundaries of unknowns to due to ECU learning curve and random environmental fluctuations. I know the dyno shops would hate me for saying so, but I really don't think a dyno tune is absolutely required on this car for NA bolt-ons. If someone secretly swapped out my tuned map for a stock one, I'd probably never have noticed in the long run.

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