I was just curious to see if anyone would fill me in on there thoughts and experience with the HPT on a standard naturally aspirated computer with a boosted application. I have a 99 Z24 complete turbo setup currently running the Emanage. I am running fine with it in boost and high boost as well but the cars drivability sucks ass. The Emanage can not tune light load with larger injectors well at all. So driving around town I look a moron. The car spits and sputters when I take off then squeals the tires and jearks a couple times. A long story short, I look like an idiot who cant drive a manual transmission. haha. Not happy at all with it. There is no map to remove injector duration. I bought it years ago when not experienced. Junk! LOL.
I have done a lot of tuning in the past 5 years with Hondata, and AEM and other systems at work, so tuning is no new thing for me. So after messing with the Emanage, I have found that it is too unsophisticated for my setup.
For the HPT, I am aware of having to trick the map values at the cost of loosing resolution in the map when running boost. I am trying to avoid A lot of wiring with going the Tech III route, and wondering if the HPT is versatile enough to obtain respectable performance to run 15-20psi with a stock gm N/A computer.
I would be happy with some input from those who have experience and is it worth it to go this route.
I have read the sticky and researched a lot about it. I understand the system, I would just appriciate review of the system and the thoughs of those with experience.
Thank you in advance.
I am using hpt to tune my Supercharged Eco, and to be honest it is cake work using Alpha -N, since the charger runs with the crank itself and boost is so linear its perfect for that application.
Now to tune a turbocharged car is a completely different ball game. If you were running the 2000 z24 Pcm, you'd be in luck since you could work with the supercharger tune.
Alot of people who DO use hpt with turbo applications, also run fmus as a sort of insurance policy. If you do feel up to it go for it.
Thanks for your input.
It kind of sucks I missed the cut off by a year. I have talked to a couple of friends running with the reflash and they said the same thing.
It might be worth using Alpha -N for my application then. I have done a lot of data acquisition, which displays how the turbo responds on my engine. That helps with mapping the fuel for sure.
Have you worked with the VE table? Or experienced any areas of concern with the MAP sensor trick?
Thanks again
by map sensor trick I assume you mean faking the 2 bar?
In that case I'm working with the STOCK 1 bar sensor. And yes In order to properly tune the car you are working with the ve tables.
While HPT is not the best solution for boosted vehicles, it can work great if you know how to make it work for you. There has been the debate on here whether or not its worth it and there will always be some type of argument about it. I have had great success with HPT on many types of vehicles. I have actually taken Emanage units off of customers cars and used HPT and they were much happier. There really is no need to fake the 2 bar as all you will be doing is changing timing tables and losing resolution.
P&P Tuning
420.5whp / 359.8wtq
