Dyno VS Street Tuning

I'm just wondering you guys' opinions on dyno tuning VS street tuning. I thought of this while reading the "checking out LS1 cams" thread.

My car has been tuned on the street, as it is a street car. I can see how dyno tuning a car would give you the biggest HP number and best WOT tuning but can you really get a good part throttle / good driveability out of a dyno tune?

What are your thoughts / experiences?

[DETROITMUSCLE]

Street tuning is great, but dyno tuning will give you the very most at WOT and maybe not the best street manners.

[CollinsAutomotive]

Street tuning is great, but dyno tuning will give you the very most at WOT and maybe not the best street manners.

every good tuner will do a mix of both. you can do all of your steady state fueling and spark on the dyno. Transient( throttle Response) is best done on the street becuase its hard to feel how the car is reacting on the dyno.

Sean

[ws6transam]

every good tuner will do a mix of both. you can do all of your steady state fueling and spark on the dyno. Transient( throttle Response) is best done on the street becuase its hard to feel how the car is reacting on the dyno.

Sean

I second that. In fact, I was at Sean's place yesterday. Want to know why?

...because I learned the HARD WAY that attempting to tune on the street is a poor substitute for getting a pro to help you sort it all out. I spent a whole summer working on my tune in 2005, and had gotten it "somewhat" sorted out. Then, while working on part-throttle tuning on a country road, I whacked someone's misplaced mailbox with my mirror and messed up the door. I got the door fixed, but to the tune of $400. So I learned that it doesn't pay to try and tune and drive at the same time. It takes a second person. Not only that, but Sean was able to do in four hours of tuning what took me a whole summer to do.

It's not worth the risk: The chassis dyno is the way to go. I'm a die-hard, almost chronic do-it-yourselfer, but I'm not going to mess around any longer with street tuning. I might fiddle with some of the minor parameters, but that's about it. You can't safely 45 to 123 MPH fourth-gear blasts on the street like you can on Sean's dyno. You can't hold 3/4 throttle from 2000 to 6000 RPM like you can on a dyno. It's definitely a valuable tool and a tuner's experience is worth the money.

[CHMLEON]

Great info...

Thank You for letting us learn from your experience.

Once I get more done I will be having my car Dino Tuned.

[iroc85blu]

i to am looking for a tune this summer great to hear bc i was thinking about going the diys route.

[motownZ]

i think the dyno is just bragging rights since it doesnt include all the varibles. i know a guy with a 520 HP Z with no suspension mods on nittos on the dyno and my neihbor with about 375-390 HP with all the suspension mods on nittos and will smoke the bigger HP by like 3.5 cars or somthing. soo hes almost a second faster with less HP. sure syno #'s are cool but when it comes to racing what is that dyno sheet going to do!!!