brownrd

2000 M6

Just completed a H/C/I install and it is now time for a tune. I have done a street tune in the past when the LT's and CAI where installed but a new dyno shop has opened in town. Quoted price is the same.

The street tuner is well known in the area, the dyno shop has only been open for 9 months so I have no idea about their level of competence. They are the only dyno available within a reasonable drive.

Car will be mostly street driven but with very occasional HPDE at the local track.

Cam is 228 232 .611 .600 111+3. Heads are unported LS6 243 castings.

What would you do?

Mike94ZLT1

I prefer street if the car is a driver. It's tuned under real world conditions and the tuner can account for drivability issues that may not present themselves under a few WOT pulls on a dyno.

FrankLP

When I did my Cam swap, my tuner (TJ at H.S. Automotive and Dyno) did both for my car... maybe that's rare. He first tuned it on their Mustang Dyno, then spent a good amount of drive time to check and/or refine it. Came out great.

FYI - my cam is a Texas Speed Torquer V4 231/234 .629/.615 111 LSA

momo20

i have street tune on my fully forged ls6 with a supercharger and work's out pretty well ...as 99% of my driving is on the street

neutron82

another vote for street tune... even if the tuner is using a dyno for wot tuning they should still be doing street tuning for driveability though

dankhts

had 3 - 4 tunes over the years after various mods/upgrades/engines, and always had a dyno tune to squeeze out the most power safely via timing and other various adjustments followed by a street tune to dial in the driveability, shift points, TC lockup speeds, and other things etc etc... always seemed to take 5 - 6 hours for the whole deal each time.... pretty thorough....a good tuner can give you a great street tune too though ...I'd prefer a street tune if the dyno guy couldn't do both....

DetroitPlac

Street tune is critical for a cammed car to drive well on the street. I think it's far more important.

I got my car tuned on the street so it drove well, then took it to the Dyno tuner to get all the power out of it.

C6_Racer_X

For a track driven street car, I'd go with "All of the above." Probably the dyno tune first, assuming the budget will take both within a short time.

On the dyno, the tuner will get the most power and performance possible out of your setup. That's important for the track. If you're just doing HPDE, it's your call as to how important that its.

A street tune will work out drivability issues in "normal street" driving. It takes the rough edges off the dyno tune. If you tell your street tuner that it's already been dyno tuned, he can avoid changes to the WOT/full power parts of the maps and concentrate on drivability, mid range power and the areas involved in "normal street" driving.

Whichever order you do, be sure the second tuner to work on it knows there was a preliminary tune, and make sure they don't "undo" the work of the first tuner.

brownrd

Thanks guys!

This is exactly the experienced based input I was looking for.

Time for a C-5

My guy also did both.

itsslow98

Yep, always been both for me. Dyno really lets them show what affects timing true has on it. Street will work all of the kinks out. Dynos do have a good ability to match street driving if it has a load controller.

Fastbird

Combination of both is the correct way. You need the street portion to see how the car acts under it's own load, but the dyno is a necessary move once you get to having to tune the unsafe speed portion.

jjc508520

When I was at ECS they told me "Every car here gets a street tune to check for driveability." You could imagine that you installed a blower and methanol kit and it lugged at low rpm or had other issues. In addition - if you have monster power "that's not safe to test on the street then we put it on the dyno." My initial visit there was a street tune only. Later on I did exhaust + LS6 intake and we dyno'd it (340 at the wheels)....

NemesisC5

Street tune always to maximize drivability then finish on the dyno to optimize WOT for safety and power. Do it right, do it once and drive knowing you're getting the best from your combination.

sirdano

Mine here in Austin went
Street tune/ Dyno tune/ Then street tune to finish off.
They did an awesome job. Mine is a auto. Car sounds meaner, shifts better and not throttle lag. Also had them set the first fan to come on at 200. Get a little toasty here in Texas

FASTFATBOY

Tuner better be good, part throttle and parking lot tuning on that cam is gonna SUCK.

Unless of course he leaves it in open loop

I've had both done, all depends on the tuner really.

I have street tuned myself with HP tuners, sending a datalog to the tuner for him to change the tune....me go drive the car with a wideband, resend the log....so forth and so on

STALION

Dyno tune you don't get real world drivability and conditions. STREET tune will yield the best possible results, but really depends on how good your tuner is. I did my HCI upgrade last year and we spent a minimum of 3 hours tunning the car on the back roads doing hard pulls and normal driving throughout the RPM range. Worth every penny!!!