dyno tunes

[Rootie524]

i can't take it anymore. with my engine growing and my wallet shrinking i can't keep going to the dyno to get my car tuned everytime i do something that throws my VE off. so im going to get an hp tuner. in the long run it's going to be an excellent investment..and im assuming i can use it on other cars as long as i buy credits and they are obd2...

now..i know alot of you guys out there might be like..omg your going to do it yourself?! you might f shit up. well..yes..but im going to read up on a lot and teach myself how to use the program before i do anything. plus ive been watching the guy at the dyno use it and i understand how it works alittle now.

but for the most part when you take a car to the dyno and the tune it, what all do they do. Im pretty sure all my guy did was add ignition timing till it started showing knock retard, then pulled it back slowly till there was no more knock..and adjust the injector flow rate. i could be wrong..but what all is involved in a "dyno tune"

and im aware i won't have the dyno..but i have an iPhone and a good straight road. laugh if you will but i shit you not..dynolicious was spot on to the HP. got it real dynoed, 146whp...used dynolicious on my iphone..146whp...i was stunned.

[Superdave]

It's always better to do it yourself, That way you know what to do if something goes wrong.


dyno tuning varies drastically depending on what's on the rollers, the biggest thing is VE tuning (getting it to make the most power in PE mode), then WOT spark advance to make sure it's not detonating. After that it's driveablity issues, idle issues and changing options in the ECM to suit the needs of the customer.


For the most part you don't' need a dyno to tune, do all your road tuning on the highway and then go to the track for the WOT stuff. I find that it's much easier to tune for power at the track, you get better datalogs and you can take all the time you need to analyze them.

[Rootie524]

ok now this may be a dumb question but do you change different parameters for each of the three things you listed.

like do you go for VE tuning one way, then after it has good VE then go for spark advance another way, then there is another way to do idle tuning. or do you go for VE and after that tweak the same parameters to give it spark advance while trying to maintain good VE, then possibly take back some fuel and spark tuning to give it good idle.

that was really hard to explain and i hope you understood. to put it simply..do you tune for all three things with the same set of numbers..like all ignition timing and fuel maps or are there different things to change that go along with what is being set out to accomplish.

and if you can't figure out what i mean just try to explain to me what needs to be done to accomplish a good VE, spark advance is quite obvious so i dont need to know that, and how to tweak idle.

[Rootie524]

bump

and also..ive searched all over the place and can't really find good details on the DHP tuner. what all can you do with that? i'm sure hp tuners is much better, but i dont need to have everything that vcm suite has to offer. i just need most of it,, but im wondering if i'd be content with DHP.

[RedZMonte]

DHP is no longer around... There fore you have to find it used and you can usually find them cheap. there are alot of DHP guys out there to help you with what you need.... There is a "Tuning Guide" one of the Club GP guys put together.... Im using DHP to tune mine.. I followed the guide and my VE is so close to stock it didnt make sense to change things... My LTFT's are pretty far off of 0 but it seems to run just fine (bit rich at times, but good enough for who its for lol).

Tuning is a bit more difficult then it sounds... Once you see everything you can tune its a bit overwelming. ive had mine for about a year or so and still don't know how to properly adjust a few things..

S

[Rootie524]

what all sorts of things can you do with DHP. for example i only would really need to screw with tranny shift points, ignition timing, fuel systems, and like fan settings and crap. i think hp tuners would far surpass what i need...if i can find a DHP tuner that may be the better route for me to go.

[RedZMonte]

DHP will do all that... VE, AE, Accesories (fans, Ac, Alt), PE, MAF, Torque management, Transmission (shift points/pressure/TCC lock up/Gear ratio/ect...), Fuel, timing.... Just about anything you will need. and the best thing is they have no credits! its unlocked if you have the hardware you don't have to pay every time you hook it to a car.

S

[Rootie524]

i love it already. haha. im assuming its a GM only thing. but any GM car with obd2 is free game?