gwcrim

I've got a line on a used HPP3 for a pretty good price. My car is all stock 'cept for a lid and it will pretty much stay that way. I'd like to change the shifting characteristics mostly. Maybe other parameters if it would help.

From what I read, the mail order tunes, etc. seem to do the same things as the HPP3. Is the big difference the know how that goes into the tune? What if you get a mail order tune and don't like the parameters?

Like many others, I'm from the old school of carburetors and dual point distributors. This electronic stuff takes some studying.

blind527

iTrader: (8)

i just want to let you know....once you start modifying, you can't stop

horist

HPP3 is only good for gear changes/tire changes and if an A4 shift point changes... the Power Programming is a joke... some cars like it , many do not...

It basically adds a bit of timing and leans the car out... which if you're already on the lean side is bad...

Many mail order tuners will make changes for free to stuff like rev limiter, shift points, etc...

Unless you can get an HPP3 for sub 100 bux (and yolu trust the person selling it... the HPP3 HAS to be for your year car and the original car has to be 100% HPP3 free... if not you have a paperweight)

Third Gear

iTrader: (3)

I'm with horist - if you saw what changes the HPP3 actually made to the timing table... you would laugh

Mail order would be better, and usually additional tunes will be free for awhile (less shipping), and then you pay only a fraction to get it reflashed after that.

SmokingWS6

iTrader: (1)

I think hpp3 changes about 10 timing cells, that may or may not even be affected by WOT.

gwcrim

Yeah, I forgot to ask about that. So the seller has to have put the stock tune back on the PCM for it to be of use?

So that leaves either mail order or a PC/laptop based reprogram. Right? I'd prefer to have the controls at my finger tips. What's the best bang for the buck in do it yourself reprogramming?

I'm very suseptible to that curse. There are two grand results of it in my basement now. An 11 sec. Challenger and a 180 MPH Sportster.

I may do SFCs and of course a set of shiny rims. And when the original one hole rusts off, a dual exit muffler. This is my luxury liner. Cheaper than a new Harley and it seats four!

horist

See reply in bold

gwcrim

So if I'm understanding this HPP3 thing, on the fuel and spark curves, it only does one or more "preprogrammed" tunes and no custom ones?

On a car that's pretty much stock, does one really need to tweak things that far beyond stock?

WS6FirebirdTA00

iTrader: (33)

i dont see how people still go for hypertech with all other options out there. they suck

horist

correct, the HPP3 only offers 1 canned tune, no custom tuning of timing or fuel curves

On a stock, some pickup alot of power w/a good tune, others don't pick up anything...

Depending on how far into tuning you want to get, you may want to consider a full tuner package... since your car is relatively stock now there's not much to change... but as you add more mods you can learn how those mods affect the car and tune for those... (assuming you're willing to devote the time necessary to learn it)

Honestly though, w/the mods you have I wouldn't worry about a custom tune yet...