Grimlock

I picked up an '03 Z06 two days ago and the car is bones stock except for a BlackWing(?) CAI and Plenum. Would it be worthwhile to get a dyno tune, or a bit overkill on a mostly stock car? I don't plan to do anything else to add power.

Rick at Synergy Motorsports recommended a dyno tune after he inspected the car. He said it was getting something like 15% more air than optimal. Of course, he also wants the business, so he might be a bit biased. I do know he is considered one of the best tuners though!

Also what kind of gains should I expect with a tune? 10 hp? And what would my RWHP be roughly at? 360-ish?

mph1972

Honestly, I would not do it, but there is probably a few things that could be gained.

MTPZ06

Worth it unless you're looking to do LT headers real soon, then I'd judt wait. 10 rwhp is realistic with a tune on a stock car with intake only.

Grimlock

Yeah I am just not sure it is worth it for $500....

PS: if an admin sees this thread, could they fix my title typing error!

mph1972

A good mail order tune would probably net you close to the same gains and it would be much cheaper. If you have a friend with HPTuners or EFILive, I would look into that route.

tlove32

I'd say keep your money....wait til you get more mods that actually require a tune

Xx_Black-out

Depends what your future plans are. LT headers would be worth doing before tuning... if you don't plan on getting LTs anytime soon, I'd say go for it.

There is a lot of stuff you can get out of a tune. Here's a link...many more if you search:
http://forums.corvetteforum.com/c5-s...ck-c5-z06.html

Grimlock

Yeah, I am not really planning on any other mods. I was considering a cam, but I think I will just keep the car as-is. Who knows, maybe the mod bug will bite me in 6 months, but I doubt it.

JETninja

Good luck passing smog with LT's here in CA. I researched it, not a good option. May change in '14 when the state changes it to only pulling codes on OBDII cars...

I have a shop that doesn't look, but they do test and I support that. LT's move the O2 Sensor to far down, messing up the readings...

mchicia1

May be better to get a mail order tune from ECS. I am sorry, but 5-10 hp is not worth it for $500, that is of course unless the car is having ping issues from the extra air from the CAI or money is at your disposal .

mchicia1

Haha, I am going to save this and send you a PM within 6 months after you do heads/cam . If you leave the car stock and just enjoy it, you won't mess with it most likely. Once that first mod goes on, the ball starts rollin LOL.

LWSZ06

Most tuners only charge you the big bucks, around $500 for the initial tune.
Then, only around $100-200, for retuning for mods. So, you can get the
first tune, now, then one after the headers, then the cam, then the heads, etc.......

Larry

Xx_Black-out

My car has LTs and X pipe(w/ high flow cats) and passed CA emissions...it also has been tuned.

mph1972

Get a short throw shifter if it doesn't already have one and lower it on stock bolts...sometimes I wish I would have did that and left it alone.

Silnus

Most CAI arent even effective on a dyno, but rather a drivability tune at good speeds. Even then, it doesn't really matter. Computer can compensate enough itself. Same as it does from a 100* summer day to a 35* winter day. Quite a bit of adjusting.

Grimlock

Yeah, I learned that with my last car that had $10K in mods after a year. That is why I think I can avoid it this time. Been there, done that. Unless I just can't resist....

MTPZ06

I'm in CA as well; plenty of smog legal power adders (and a few stealth items that won't cause you to fail)...but yes, it gets pricey. The easiest route is to go with FI with a CARB legal kit.