I have a chip in my ecm that I got off e-bay, it raised the rev limiter but is running to rich, does anyone know af a good chip maker that makes chips for road racing, my car is a 91 integra running in ITA and H/4

 

Honestly, you might be exceeding the duty cycle of the injectors, forcing them wide open and running rich in the process. I'd check that option before going for another chip.
HTH.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by madhatter &raquo;</TD></TR><TR><TD CLASS="quote">Honestly, you might be exceeding the duty cycle of the injectors, forcing them wide open and running rich in the process. I'd check that option before going for another chip.
HTH.</TD></TR></TABLE>

this makes no sense. Try to lengthen the injector pulse another milisecond and tune the nawz, you'll run 9's.

 

Custom chip!=tuned correctly. It's a possibility, and I was just suggesting to check it out.

 

Yes I agree that a universal chip is most likely not perfect for his car... which means he should get a different one.

I'm just saying its impossible that his injectors are at 100% duty cycle. I would suspect that this chip is not asking for 100% duty cylce, as any N/A honda with that much fuel would choke and die, and no one in their right mind would make a chip that required 100% of an injectors capability...

Normally, the only time you hear about someone hitting max duty cycle is when someone is tuning a turbo'ed car w/ a standalone, and slowly turning up the boost and trying to add more and more fuel - until there is no more fuel to add.

Another possibility is that the chip was tuned on a car w/ smaller injectors. On your car (assuming you have larger injectors), the same length pulse would spray more fuel then needed.

With the rules that most series allow, when choosing a generic aftermarket chip for your car, its best to go with one that runs slightly too lean, and then tune it for a proper mixture by increasing fuel pressure. There isn't an effective way to lean a car out without a VAFC or standalone, and most of the rulebooks I read say you can't add such devices.

 

I used a few of them on my 91 Integra and I thought they were all junk.

 

you should PM ITAIntegraLS..he would know if there is anything

 

I would look for someone / some place that could provide the mugen maps for your motor to you. I hear they run pretty lean, and you could tune it w/ fuel pressure.

 

Frito Lay.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Catch 22 &raquo;</TD></TR><TR><TD CLASS="quote">Frito Lay.</TD></TR></TABLE>

LOL, that was good.

 

Call "Peter" at PYR Racing. http://www.pyrracing.com He makes great chipped ecu's/chips. Tell him your application and he can program a chip to what you have. Tell him "Jonathan" from Sacramento told you to call him and he'll help you out. He did a custom program on my ecu to help put 203hp to the wheels of my B16a.

jmeris
WC HC H1 #47

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by vtecjj &raquo;</TD></TR><TR><TD CLASS="quote">Call "Peter" at PYR Racing. http://www.pyrracing.com He makes great chipped ecu's/chips. Tell him your application and he can program a chip to what you have. Tell him "Jonathan" from Sacramento told you to call him and he'll help you out. He did a custom program on my ecu to help put 203hp to the wheels of my B16a.

jmeris
WC HC H1 #47</TD></TR></TABLE>
Thanks, Calling him now.

 

Anyone else read the Grass Roots Motorsports article about injectors? Pretty interesting!

What is a fair price to have a ECU reprogrammed (custom)?

 

Spoon made a chip for the LS also. You can find it on Ebay for around $75+. It works good.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by ITAcelica &raquo;</TD></TR><TR><TD CLASS="quote">Spoon made a chip for the LS also. You can find it on Ebay for around $75+. It works good.</TD></TR></TABLE>

Any of these chips sold on Ebay are copies and you shouldnt pay more than $15/each. Spoon, Mugen, PYR, Dinan - who knows whats in the fuel trim?

I tried a few, and couldnt tell a bit of differnece between each.

 

 

Who the heck would pay 75 bucks for a chip that wont even work right?

 

what about hondata?

 

If its a real Spoon from Japan then its worth $75. But a fake copy is not even worth trying.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by ITAcelica &raquo;</TD></TR><TR><TD CLASS="quote">If its a real Spoon from Japan then its worth $75. But a fake copy is not even worth trying.</TD></TR></TABLE>

They're all fake copies. Anyone with a $25 PROM writer and a stack of blank chips can make them all day long.

 

PM eg6ajk on this board or go to http://www.hyperducktuning.com. He offers very fair prices, and usually will include an extra chip or 2 for free when you order. He has a bunch of non-vtec programs.

 

I would run hondata on it....of course it will have to be tuned on a dyno, but that is the best way to get the tune perfect for your setup. None of the copy chips on the net will work worth a damn. I have some badass programs that I made for my ITA crx and customers crx's, that make serious power for ITA setups, but they won't work in your ecu. There is no way that you are running 100% duty cycle on your inj. I wouldn't worry about that. Get a custom tune, otherwise use stock...everything else is a waste of time and money.

 

Some of you know this, but some of you don't...
Messing with your ECU, even just to raise the rev limiter, can seriously screw up your car. Don't play around with this or attempt to cheap out and save a few bucks, that $25 ebay chip could very well at best make your motor run worse and at worse could blow it up.

Late last year ALL we wanted to do to my ITC car was raise the limiter 400rpms so we could run a 4.7 FD. Honest, thats all we wanted. What we ended up with was 4 different chip attempts on 3 different ECUs (fried one of them) and 35 dyno pulls and varying adjustments before we got it right. In the end we had to go with a honkin' fuel pump and run race gas, but the car is putting down excellent numbers now. But I'm honestly not sure if I'd be willing to go through all of that time and expense again (and its a good damned thing we had a sweet deal with the folks at Balanced Performance dyno, or the dyno costs alone could have topped $700) to get what we got. But its done now and working well.

And before you say "You shoulda done Hondata" you should know that they don't have an application for the dual point cars. We were swimming in uncharted waters.

 

yeah you are pretty much SOL when it comes to that dual point ecu....I have been messing with them a little, but that ecu and engine setup was origanally engineered in japan for good gas mileage and emisions only. They never thought about racing it. That design is about as close as a fuel injection car can get to a carburator. scott if you don't mind PM'ing me, ide be interested in comparing #'s we have got with our setups on the Dual Point ecu's. That is if you are willing to tell me your hp#'s

 

You can try http://www.bctuning.com I know Bon has done alot of ECUs he may be able to do yours.


Modified by DerangedEG at 1:17 PM 4/15/2004