Someone was just asking a question about spending $425 on a tune and was wondering if it was worth it. I didn't want to hijack his thread but my question is, exactly what is considered a good tune on a C5. What are they actually doing for $425? What will a dyno do for you?

 

Take a look at my sig; the before and after numbers

 

The use of a dyno gives the tuner the ability to watch your Air Fuel ratios via their own equipment <more acurate than stock 02 sensors> While doing WOT and part throttle runs, safely. Many dyno's can put the car under a load thus simulating street driving.

A basic dyno tune is in the $500 dollar range plus or mins $75 bucks.

As i said in the other thread $425 is not worth it without dyno/street time.

Basically a dyno tune can edit MANY parts of your power train. If you've got an automatic it can adjust shift points and shift firmness. It can adjust for new stall's or different sized tires.

On a manual there's not too many changes you can make except turn off the skip shift.

Now for the engine. You can edit the fans, the timing, the fuel, ect. Also can delete codes, such as your 02 sensor codes. Basically every paramitor required by the motor to run, you can change it with a tune. With your common tuning software <ls1 edit, hp tuners, efi live-edit> You can make edits to the software to compensate for just a few bolt ons, or for dropping in a forced induction 427. It doesn't matter to the software it can edit it all.


NOW, is the $500 worth it?
That all depends on what mods you have, and what mods you plan on getting. If you've done intake and exhaust and deleted the Cat's, it's must easier just to get the tune and delete the codes than taking a chance with the simulators working or not working <they're not 100% for all cars>. But if you do intake exhaust and are planning for a cam, it'd be best just to wait a bit and get it all tuned at once.
With intake and exhaust a dyno tune can be worth as much as 20 horsepower, maybe a little more <we proved that last weekend>. The car ran great without a dyno tune, but Rev Xtreme was offering a good deal so we put Matt 24's vette up there to see what it did.

Most cams <and beyond> are going to require a dyno tune. Your computer willl compensate for the cam, but you may have issues until you get the car tuned. If it's a monster cam, i would recomend a tune along with the cam, if it's a baby cam, go ahead install the cam and drive to a tuner, it shouldn't be a problem.


Hope this helped, i could go on for a while, but think i've explained it.


Chris

 

Sorry to steal your thread. But I have a stinger intake, quad exhaust, and x pipe. Would the dyno tune give me increase torque I lost because of the increase flow?

 

it'll get you more power throughout the band by getting you a better A/F ratio. i'd say go ahead and get LT's and finish out the exhaust and then get a tune. good luck!

Jim

 

Thanks for the info Chris. I really didn't know what was involved. I have an 04 vert, mn6, 3:42, halltech intake, and GHL exhaust. That's probably about it. A tune sounds like a worthwhile thing to do? Yes?

 

nope for 500 put it towards long tube headers.


I'm sorry, when i referred to intake and exhaust...i usually mean Headers too...Muffler's aren't much of a performance mod, by themselves.


Chris

I mean, if you're NEVER going to mod your car again...might as well....Buut, if you're ever going to move on with mods, that tune with that few mods is fairly worthless.

 

A dyno tune is worth it if you've got an A4, because they'll be able to get rid of torque management, as well as being able to raise the shift points and speed up the time it takes to make the shifts too. Those things alone are worth about 2 tenths in the quarter mile. The stock programming for the automatic is quite lame. It shifts far too early, far too slowly, and TM is definitely something you don't want.

 

Dyno tunes/LS1 Edits are worth the money....

 

 

Its no big deal, but why did you not just ask that question on my thread?

 

Its no big deal, but why did you not just ask the question under my thread??

 

Thanks! You convinced me!!

 

 

I was trying to be courteous and not hijack your thread. I thought about it, but people can be very sensitive sometimes. I thought I was doing the right thing?