I just got back from kenne bell. they took the whipple piggyback system off my truck and rplaced it with new injectors and reprogram my computer. I used to run a hpp3 but I took it out and put everthing back to stock before I took it in for the piggy back replacement. They told me that the hpp3 had left some tables changed and it plays havoc when trying to reprogram again based on the assumption that all is stock inside, when in fact things are not. This is after Its supposed to have been taken out,but it just takes most things out and leaves traces that are not good for programmers that follow.

 

I would be very interested in knowing what tables were left behind. I have no idea what they are using to edit a pcm. 99% of the tables hpp3 modifies are viewable by edit, I've never seen any traces. Of course i'm only using ls1edit.

keep us updated on the power increase,

allen

 

When they dynoed my truck with the whipple computer and secondary injectors the stock speed limiter did not engage at 98 mph. it ran out to 111 before it kicked in.It did not take out the modified speed limiter completelly. I had used the 128 limit with hpp3. I also still used the hpp3 to raise shift points when i was running the stock whipple set up. their is now some wierdness in the 2/3 shift which showed a downward spike on the dyno at shift. this might be caused by the large power increase that resulted from the conversiion to the bigger injectors with their reprogram. It now is hard to get traction well into 2nd gear. or any where under 60 or so. peaked at 418. at the wheels.thats a shift spike . sustained peak hp was 332. or so. different dynos produce different numbers with the same car , the whipple only made 280 so the peak is up a bunch but even more at 4000 its closer to 70 or so. your name was part of our conversation to day . when i said nelson tunes they said oh you mean farm truck! everybody knows everybody in this interspace world. i will look into what he reprograms with on my next visit out there.

 

HAHA ... that's funny! I have a before and after of a HPP3 if you want to look at it Allen. It was on my old z71 though. I want to say mine was stock when I removed the HPP3. I know it sure did have a 98 mph speed limiter!

I can't help to ask ... did they criticize his tuning?

 

If you had your PCM flashed by a dealership, would it still leave traces of the HPP3?

 

IT isn't supposed to but this is the 2nd time i've heard of it going crazy like that.

 

what i want to know is if the hppIII is'nt removing some items, if you return it to stock and sell it are those options still available to program in the new vehicle ? i'm trying to sell mine and i'd hate to think i sold someone something that is not 100%. anyone heard of anyone buying a used hppIII without all the tuning options of a new one ?

 

A little background info: A few months back, a member on the silveradoss.com site took his truck with Kenne Bell to farmtruc. Allen removed the KB programming, then tuned it up with Edit using a wideband and data logging. Obviously this personal program is a better tune than any "box" tune like HPP3 or KBs tune that comes with their kit. In that thread, there was a picture of a warning label that comes with a KB supercharger that said "WARNING: use of any aftermarket programming is extremely dangerous, blah, blah, blah..." Then over that warning sticker, was written "Tuned by Nelson". Rather funny.

At this point someone from Kenne Bell started posting, making claims about warranty, liability, and legal issues with that KB warning sticker (which was being used as a signatiure pic). A few members made comments about programming, the KB guy took the bait, and a little famtruck / KB storm errupted. Fairly quickly, the KB folks saw what was happening, and made some defensive manuvers then tried to smooth things over. That was KBs introduction to Allen.

 

If you have before and after dyno charts, I would like to see them. If you don't have a way to post them, email them to me and I'll do the hosting and post them up here in this thread.

 

lol I had no idea of the soap opera going on priviously between kb and allen. I myself am totally neutral. I am just trying to have a good reliable street legal in calif. truck to work everyday with and race at the brackets and test and tune days at my local s. cal. tracks. I tried to post the dyno sheet at a frinds house but coudnt sign in so we came to my house but lft it in his scanner . I could cll him and have him e mail you or be pationt and i will post. the numbers seem low to me compared to numbers i got when na on the stillen dyno. thats why i mentioned that you can not compare dyno numbers if the testing is done on different dynos not to mention time of day and other variables possible from site location differences. that said on the stillen i made 236 to the rear wheels with bolt on na stuff and ran 14.84 the whipple ran a 13.88 which seems good . their dyno numbers of my stock whipple would make it hard to run 13.88 if the dynos were creating comparable base line number. but they were different dynos and places. so its not apples to apples.also when i ran at the track i removed the headligt and put a big kn cone filter on the maf rigt in the airflow and ran the hpp3 shifts at 6000 runnig 100 octane mix the rpm spools up some higher boost . i have no dyno numbers on that combo. kb said to put my computer back pure stock before i brought it in. the tuner at kb specifically aked me to post what occured when he went inside my computer and found the traces of hpp3. the dyno does showw about a 111 cut off when the ran the stock computer which should of cut out at 98 or so.aanyway its all good that we live in the usa get the freedom of choice and debate and lol i love a chevy v8.