Engine management unit

[behvah78]

Anyone tried and engine management on their gp. Which brand would u go for? haltech? motec? Can you modify anything significant beside the air/fuel mixture? can you modifty shifting?

[behvah78]

by the way what is this RamChargers L67 Scanmaster?

[sonhasteg]

The scanmaster has been around for awhile, there's a few people giving it props on the ClubGP board. You can go there to find out all you want to know.

Okay the opinion part - I feel there are better scanners for your car. I use the LS1M, but you should decide what is best for you. There are several others out there, but I can't remember the names. I already had a palm so the LS1M was the cheapest route for me to go. If you have a laptop, Autotap is widely considered the best scan software but there are many others.

As far as PCM programers...I could be wrong on this one, but the only two I know of that provide you with any real flexibilty are the ones made by DHP and HP tuners. You'll find all kinds of debates over these two.

If you just want a pre-programed PCM check out Intense, DHP, and C-Ya Racing...again heavy debate over which is the best.

Choices...what would the world be like with out them.

[behvah78]

Well I already have a jet-chip which changes the fuel-air ratio but I want something with more functions that would be used with my laptop.

[behvah78]

Okay I have narrowed it down to these three:
scanmaster
autottap
EFI Live
Which one would you choose? And can you change shifting point with anyof these guys?

[GTPCatz]

None of those allow changes in your PCM....They only monitor what is already there...

Digital HorsePowers and HP tuners are the only ones that allow you to make changes

[behvah78]

"None of those allow changes in your PCM"
The EFIlive does but unfortunatly its for 5.7L 1999- engines.
I already have the jetchip for HP and I'm happy with it. The only thing I needed was to change shiftpoints so I just bought a thrasher shift kit along with the autotap scanner.

[GTPCatz]

Originally Posted by behvah78

"None of those allow changes in your PCM"
The EFIlive does but unfortunatly its for 5.7L 1999- engines.
I already have the jetchip for HP and I'm happy with it. The only thing I needed was to change shiftpoints so I just bought a thrasher shift kit along with the autotap scanner.

Thrasher shift Kit will not change shift Points....

[JoeJoe231455]

I believe Zzp in cooperation with dhp has a pcm with an add on A\F\timing control unit. You hook it up in the car and you can advance timing as well as A\F ratio. Alot of guys on the clubgp seem to have given it good reviews although I can't say I've used it personally. Dhp will custom program just about anything for the L67 to match your mod combination\aftermarket gearing\shift points etc.

[behvah78]

"Thrasher shift Kit will not change shift Points...."
Thrasher shift causes faster shifting in a way it does change the shifting point(when the clutch is realeased)

[GTPCatz]

Originally Posted by behvah78

"Thrasher shift Kit will not change shift Points...."
Thrasher shift causes faster shifting in a way it does change the shifting point(when the clutch is realeased)

Not really...it only makes shifts happen faster not sooner or later
The computer will still command the Transmission to start a shift at the same point in the RPM range..you will not see any differance as far as shift points go...you will only feel the shift more

[behvah78]

"Not really...it only makes shifts happen faster not sooner or later"
That's exactly what I said. Hehe
Right now each shift takes like 1sec for me and by the time I'm in next gear the rpm is higher so "in a way" it does change the shifting point. Get it?

[GTPCatz]

lol you have a misconseption of what a shift point really is....

The shift point is when the PCM tells the Trans to shift....Thrasher shift Kit does not change this...

your RPMs my change a little but not much...maybe 250 (doubtful) at the most for a shift to happen now

My Car has a custom PCM....My shift Points are at 6000 at WOT...by the time the shift happens I am usally at 6100 to 6150....
your car shifting at around 5500 (stock) will take even longer to jump in the RPM range...with a stock valve train

I hate to burst your bubble but the shift kit will do very little for your shift points

BTW: I have no thrasher shift kit

[behvah78]

That reprogrammed pcm is crap it just makes you feel like your shift is faster but the truth is you can only have a better shifting mechanically! Thrasher is the real shit believe me. I saw one installed on a buick and the guyz 1/4 mile time dropped by .4sec
by the way I just noticed that my shifting point is at 6 too maybe its the jetchip maybe the pot i smoked.

[GTPCatz]

Originally Posted by behvah78

That reprogrammed pcm is crap it just makes you feel like your shift is faster but the truth is you can only have a better shifting mechanically! Thrasher is the real shit believe me. I saw one installed on a buick and the guyz 1/4 mile time dropped by .4sec
by the way I just noticed that my shifting point is at 6 too maybe its the jetchip maybe the pot i smoked.

LOL I know you think your right...but your wrong....

I have seen the Thrasher Shift kit installed as well...a couple members in our club have it installed...it does not alter shift points....and call the PCM crap all you want but you will not get to low 12s or even low 13s without all that PCM "crap"

And there is no "feel" like the shift is faster at all with the PCM it happens later in the RPMs with the PCM.....thrasher only makes it feel faster....

you will see when you get your scan tool....If I was you I would do a scan before and then after and see that the shift points will remain the same....unfortuneatly cars now-a-days are computer controled and not all that "mechanical"

but im done argueing with you until you do your research.....you obviously have your facts mixed up here