I have CAI, jet hot long tubes, high flow cat, no muffler, hypertech. Will I gain much off of it and if so what should I expect? Also what should me et be around and how much will 4.10s help?

 

A dyno tune is always beneficial. With your mods, you really don't need a tune though.

 

I've got basically the same mods, albeit with edelbrock midlengths. Anyway, I just got the Madz28 email tune last week, on the first baseline revision right now (waiting on new tune if needed after some datalog runs I sent in). Anyway, as soon as I flashed the custom tune and started the car I could feel a difference, everything about the car was just smoother even at idle, I added a 160 stat at the same time and w/ his fan adjustments the thing runs perfectly cool, so far has not even gotten a hair over the 180ish mark on the gauge. Car feels a little stronger at WOT but power gains are hard to say without a dyno run obviously.

For people w/ headers and such still on the stock tune I'm going to be strongly recommending a madz28 or similar tune now. Previously I didn't really think I would benefit that much from it, but I'm very happy w/ the results so far. But you do have a hypertech already. Now although everyone will slam the Hypertech, I wonder how much you'd really gain over it w/ a custom mailorder tune with these levels of mods. Seeing as you can probably go back to stock and then sell the Hypertech on ebay or something for the cost of a mail order tune I'd say you'd be better doing that, but who knows how much power you'll really gain. If you get a actual dyno tune I'm sure you'd pick up some, and you'll know you've got an excellent tune for your particular car...

 

Well, I'm getting a HPPIII after my gear change and T-stat change.......people bash it, but I'm not exactly in need of a full tune....I'm not nearly going to have enough mods to warrant that. I'm getting the programmer to make the necessary changes after my mods......I'm not tuning for cam/heads or nitrous.

 

What kind of tune are you referring to... a dynotune, a mail-order tune, or a Hypertech tune? A dynotune would not be worth it for your mods. and a Hypertech programmer is a waste of three hundred bucks in my opinion. A mail-order tune from Madz28 or Pcms4less would probably be your best bang for the buck. I think they say gains of 10-15rwhp is common, but they also tweak alot of other things like coolant on/off temps, tranny shift firmness, gear changes, SES code removals,ect.

 

I would never consider even buying a hypertech, unless I got it cheap and needed to adjust for gear changes. Get a laptop and program or have someone who can for you. I run a 13.3 without juice with just shorties, cia, catback, and programming. Not only gives you gains, but you can make the car alot more fun, especially if you have an auto.

 

I was thinking of a dyno tune.