boosted k20

to all the people.... mainly tuners that run CROME, i have a question for you. When you tune cars, do you work off the P72 or the P30 based ROMS? i have always used the P30 based roms because thats what CROME was created on and there is alot of support for it.

well the other day i was tuning my friends built setup: 84mm sleeved LS/VTEC setup, 3" open downpipe, 44mm gate, PT70 turbo, Precison 600hp cooler, edlebrock IM, ITR cams, running on crome. I used the P30 based rom.

When tuning the car, it would run perfect in the lower RPMS. the a/f was fine, from 11.4-11.6 a/f across the board. when the car reached about 7K rpms, it would break up pretty bad. i tried everything to get rid of the ignition problems like a new dizzy, new plugs, changed the gaps, checked all the grounds, empty the gas and put in a new can of C16. But nothing changed the breakup. i even put in the code that John Cui of crome made that will allow me to pull more than 15* timing. still i would get the breakup at the same rpm.

I got fed up and decided to put in a previous UBERDATA tune i did on this car last year where it made 620whp. when i put this program into the computer, the car revved out clean and was making good HP. the a/f was still in the 11.5's and the timing values in uber and crome were about the exact same.

I dont get it Im gonna retune this car on sunday with a P72 version of CROME. this is the only thing im coming up with since UBER is based on the P72 rom.

any of you guys had these problems?

Boosted_Coupe

going thru the same problems as this guy.. free bump..

ralph11sec

crome worked fine for us pretty well. check again for ignition system. plugs - wires - dizzy. and fuel pump, filter, regulator,

0mtber

iTrader: (2)

Try downgrading to a different version of crome etc...
p72 or p30 code should work fine...

If you want something that is going to work flawless, your going to pay for it (Hondata, Neptune etc.)

borat

If you have problems with crome, but not uberdata, it's obviously a software problem. I've found that crome has a better tuning/datalog interface than uberdata, but the code that runs the ecu isn't any better. As others have said, try a different version, or maybe the p72 based rom will help, it helped my setup slightly.

boosted k20

yea i'll try it. i tried version 1.4R3 and also an earlier version of crome but still had the same problems. if the P72 based rom works out good, i'll let u know.

i would get neptune if its for my car, but i tune alot of cars and not everyone can afford hondata or neptune. Crome is the cheapest solution. i've had good results with crome before, but i dont know why im having ignition problems now.

im still waiting for eCtune

boosted k20

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by ralph11sec &raquo;</TD></TR><TR><TD CLASS="quote">crome worked fine for us pretty well. check again for ignition system. plugs - wires - dizzy. and fuel pump, filter, regulator,</TD></TR></TABLE>

why would it work fine in uberdata and not crome? we changed all those things u mentioned but still no luck. using uberdata, all the problems went away

SOHC_MShue

i'm interested in seeing the answer to this. I've been tuning p72 maps all along because i never trusted the p30 after dealing with shitty iacv control problems on those roms

YC Underground

Try eCtune, find an eCtune dealer near you and give it a try trust me you love what it can do for your ride. Crome is known for it un-stable features.

boosted k20

i want eCtune!!!! Calvin hasnt released it yet. I emailed him asking what i need to do to become a licensed eCtune tuner. I know you YC Underground are a licensed eCtune dealer. Your from yonkers right?

welfarepc

ive heard from a local Crome has timing issues with p28 ecus... u make changes, it forgets them

i cant say for sure because it wasnt me working with the tools but thats the word on the street son

SOHC_MShue

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by welfarepc &raquo;</TD></TR><TR><TD CLASS="quote">ive heard from a local Crome has timing issues with p28 ecus... u make changes, it forgets them

i cant say for sure because it wasnt me working with the tools but thats the word on the street son</TD></TR></TABLE>
crome had issues with not being able to retard enough timing, but there is a fix out for that.

JDMisGOOD

How many degrees of timing do you have in it??

miller

i say ditch the crome.

Rob97'SH

What are the advantages of Crome vs Hondata?

0mtber

iTrader: (2)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Rob97’SH &raquo;</TD></TR><TR><TD CLASS="quote">What are the advantages of Crome vs Hondata?</TD></TR></TABLE>

Go to hondata.com and read the features list. Go to http://www.tunewithcrome.com and read also...

The major difference is the R&D put behind hondata before a release....
The stuff actually works like it should.

SOHC_MShue

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by JDMisGOOD &raquo;</TD></TR><TR><TD CLASS="quote">How many degrees of timing do you have in it?? </TD></TR></TABLE>
in what? It depends on the motor. Without using the crome timing fix i've ran into motors that could not be tuned below knock threshold no matter how much timing was pulled from the maps.

boosted k20

the timing fix on crome does work. i was able to pull timing to single digits to build boost at idle.

there is something else in crome thats causing this breakup. Hopefully sunday i will get a retune on this motor using a P72 rom to see if it helps.

as soon as eCtune is officially released, bye bye crome

boosted k20

timing on the motor was good. timing was advanced until MBT was reached. its not a tuning issue but a software issue. Timing and a/f in both crome and uberdata were about the same, but uberdata ran clean w/o any break ups

Boosted_Coupe

did you ever figure it out?

building boost

it's a good program but i don't like spending 3 hours trying to figure out which version of crome is working and what bugs it has. i paid 150 for crome pro but my datalogging doesn't work half the time. i spent 3 hours and 3 different crome versions trying to figure it out. i can't wait for ectune to be released. but for now, i have to say to s300.

btw i use p30 based roms. never had any break up issues though. try crome 1.2. i think 1.4 has issues.

boosted k20

nah i didnt get a chance to test out the P72 version yet. still waiting on my friend to sump his fuel tank before we retune the car.

Like many of us, im still waiting for eCtune. A few members on pgmfi.org seems to think its a issue with the dwell settings in crome and i concur with them.

Ubertec

As far as eCtune goes the ostrich pairing is in its final stages, The tuners are testing it and trying to find ways around it right now. I'm looking for clients in colorado to test. At least the wiki is back up and running @PGMFI, so you can read and learn. eCtune is absolutly more stable and has more features than any of the freeware.

boosted k20

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Ubertec &raquo;</TD></TR><TR><TD CLASS="quote">As far as eCtune goes the ostrich pairing is in its final stages, The tuners are testing it and trying to find ways around it right now. I'm looking for clients in colorado to test. At least the wiki is back up and running @PGMFI, so you can read and learn. eCtune is absolutly more stable and has more features than any of the freeware. </TD></TR></TABLE>


well the wait for eCtune will be worth it. there seems to be ALOT of R&D and testing behind eCtune so once it comes out to the public it should be flawless

turbo boost

iTrader: (1)

does all the free crome have timing isues???? or just the newest free version?....i have 1.2 ..is there timing isues with this???