I anticipate attending a tuning session in the spring with Steve Kan. My car is mildly modded and on a PFC. I do the occasional autocross but the car is primarily for street use and will be kept at stock boost levels. With that in mind, it appears from Kan's website that even if the tuning sessions are held at a dyno, I don't HAVE TO have a dyno tune. In fact he mentions he prefers a street tune...since there isn't as much waiting.

What are the advantages and dis-advantages to me...if any? Obviously if I'm not using the dyno, I won't have to pay for that. But costs aren't the primary concern...and if a dyno would be better for my purposes I'd consider it.

banzai does both. the dyno will tune your full throttle racing performance, the street tune will perfect the partial throttle and cruising performance from what I understand

about the only thing a dyno tune does for you is:

A- let's you do WOT runs without risk.

B- Give's you a pretty # to show your friends.



Street tuning is more accurate, albeit, more dangerous....but the way *I* look at it. I'm planning to drive it that fast any damned way so it's a moot point.

I usually dyno tune first, then finish on the street. Its nice to have someone watch under the hood while your at WOT too. The dyno however is not real life, you don't drive your car with your hood popped, and the fans on the dyno cannot simulate 100+mph air being forced into the front of the vehicle..

The benefit of a dyno is to see if you are really going the right way, sometimes putting a flat spot into a tune then having it pull hard feels like more power on the street. Holding the map in load cells also allows you make sure the 02 reading is true and not a transitional blip or a throttle pump reading, although with good hills and some brake loading you can get them reasonable but I find the dyno helps to gets the line and transitions smoother.

For ignition timing though, you need real numbers to see the tipping point on the bell curve.

Using an inertia dyno, I haven't found a need to make street alterations to the map afterwards.

Thanks everyone for input.

I appreciate what Chris Sanders @ Banzai does, but he's about a 10 hour drive (one way) from me. I hope to get to a Kan session much closer.

Guess I have some decision making to do.

lol i drove to banzai from texas, but i have family in indiana :P haha. chris is on here too. his username is bluetii, he has a thread in the 20b topic and the dyno sheet topic