I just had my GS-R ecu chipped with Uberdata and now I'm hearing that Uberdata and 1000cc injectors doesn't mix very well. Am I going to run into any huge problems running such big injetors with Uberdata? Would Neptune be a better idea to use with 1000cc injectors?

I've search and found nothing major, just about 365 pages on Uberdata and the Uberdata site search function doesn't work. Any help on this would be great.

 

You can idle 1000cc injectors on uberdata. You just need to know what your doing

 

Is it safe for the ecu to operate 1000cc injectors on Uberdata? I was told that the 1000cc injectors puts such a large load on the chip that it may burn out the ecu. Is that a problem with uberdata or is that just bad tuning?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by cnydc2 &raquo;</TD></TR><TR><TD CLASS="quote">Is it safe for the ecu to operate 1000cc injectors on Uberdata? I was told that the 1000cc injectors puts such a large load on the chip that it may burn out the ecu. Is that a problem with uberdata or is that just bad tuning?</TD></TR></TABLE>

Neither, i'd say its bad information actually.

If you use a resistor box (given they are peak and hold injectors) they will be slow to open thus making it hard to idle them.

If you don't use a resistor box (given they are peak and hold injectors) yes, you will over heat your injector drivers.

If you have saturated 1000cc injectors, well you probably paid alot for them and shouldn't have any of the above problems.

I used uberdata with my 780's and it worked okay. I'm sick of dealing with the horrible lack of support so i've since switched to chrome. It actually looks and works decently. I suggest you START with chrome.

 

I have peak and holds with a resister box. So chrome would be better or should I just go with Neptune? I already have Uberdata, so if I have to change I will, but if I don't I'll stick with what I have. SO what you are both are saying as I should be fine as long as I have it tuned by someone who knows what they are doing. I live in NY so I am limited with tuners unless Jdogg or MASE come up this way on there tuning tours. Does Evans tuning mess with Uberdata at all or do they only realy do neptune?

 

Its not hard at all to get 1000s to idle. Just need to richen up down low.

 

injector drivers are injector drivers are injector drivers. People have successfully used &gt;1000cc injectors on Honda ECU's. As long as you're using the right impedance injectors your ECU should be fine.

That doesn't really answer your question on whether Uberdata can use them though. I would think you'd be able to run them, but I haven't read of anyone running injectors that big with the free offerings (uber / crome /etc..) out there (not saying people haven't done it). Give it a shot though. I would if I had some 1000cc injectors laying around.

 

I just did an h22 with them. Had the idle and deep vac perfect but never got to tune the rest of it due to some parts failing. You could free rev the **** out of it with no tuning issues, seemed like it would have been fine had i finished it.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by dennis &raquo;</TD></TR><TR><TD CLASS="quote">injector drivers are injector drivers are injector drivers.</TD></TR></TABLE>

I disagree. Peak and hold drivers are completely different from saturated drivers. Peak and hold being the more robust of the two.

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by dennis &raquo;</TD></TR><TR><TD CLASS="quote">
People have successfully used &gt;1000cc injectors on Honda ECU's. As long as you're using the right impedance injectors your ECU should be fine.
</TD></TR></TABLE>

Yes, very true and he is not using the right impedance.

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by cnydc2 &raquo;</TD></TR><TR><TD CLASS="quote">I have peak and holds with a resister box. So chrome would be better or should I just go with Neptune? </TD></TR></TABLE>

Dosen't matter what you use really you're limited by the injector pintle opening rate. Sure you MAY be able to get them to idle but good luck getting them to idle at anything near stoich. My car idles great, however it idles super rich. If i lean it out the car dies because the pulse to the injectors is on and off before the injector can mechanically open. Then when you get the injector to actually open by putting in a long enough pulse width you dump in a **** load of fuel, in my case espeicially because my fuel pressure is so high due to the fact that im trying to get more out of the 780's than i probably should.

You could try lowereing your fuel pressure so that you shift your fueling curve but that will require rescaling all of the fuel maps.

Your BEST bet is to ditch the resistor box and injectors for a set of saturated injectors, but they are much more expensive.

 

My problem is that I am on a really tight budget trying to get everything together to finish my project. How much do a set of saturated 1000cc injectors usually run? I don't mind a rich idle at all, as long as the car idles. I saw that someone mentioned the free software may not be well off running these, so would a different program like Neptune be better suited for my use?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by cnydc2 &raquo;</TD></TR><TR><TD CLASS="quote">My problem is that I am on a really tight budget trying to get everything together to finish my project. How much do a set of saturated 1000cc injectors usually run? I don't mind a rich idle at all, as long as the car idles. I saw that someone mentioned the free software may not be well off running these, so would a different program like Neptune be better suited for my use?</TD></TR></TABLE>

First ask yourself if you REALLY plan on using the 1000cc injectors to their fullest, ie 600+ whp, do you have the fuel system, drive train to support that kind of hp? Maybe its a better idea to go with a set of 780's or so which will idle no problem.

I'm sure you can get the 1000cc peak and holds to idle, just turn the fuel pressure down and go from there. I really don't think the software has much to do with it in terms of one being different from another, but i'm not exactly sure if they've actually changed any algorithms or are still just messing with the fueling tables.

 

I bought the injectors with the idea of planning for the future. I plan on puting down the 600+ whp next year but am looking to get 400-450 whp this year b/c of my unsleeved block. The idle problem is not what I'm worried about, I'm worried about the injectors putting too much of a strain on the ecu and burning out the board. I would like to go with either an Apexi Power FC or an AEM EMS later on so Uberdata is just being used to buy me some time to save the money for a better engine management. I don't plan on putting a ton of miles on my GS-R this year, so I just need something to last for a while. If I have to go with smaller injectors I will but would rather keep my 1000cc's b/c I'll need them in a year or so. You seem to know a ton about the management systems so have you ever had any experience with large injectors and Uberdata?

 

Do you consider 780's large? if so, yes.

The car idles decent, just rich thats all.

As long as you have the resistor box paired with the peak and holds you WILL be fine!

 

I have the resister box to go with the peak holds. So the only problem I'll be looking at is a rich idle but fine ecu durability and drivability? How lony have you been running the 780's on the uberdata? Are yours peak and hold with a resister box?

 

is this AJ?

 

yea its AJ, fill him in douche and guess what, my motor has 2 pistons now


Modified by kuja at 10:32 PM 5/24/2005

 

It's AJ, have you had any experience with Uberdata and Large injectors? Any problems?

Josh, It's about time that Jared finally got your assembly started.

 

from what i gathered from him today i don't think he sees a problem. I found this thread @ uberdata that might help.


http://uberdata.pgmfi.org/foru...18704

 

Thanks Josh, I have to get ahold of you and talk about the PM you sent me

 

From what I know and have heard, UD has issues with ECT and other enrichments.

I was tuning a 780cc GSR and we had tip in issues that we just couldnt shake, not dangerous, but none the less annoying.

I think at this point it all comes down to support in my opinion, one EM is highly supported by its founder, the other...the only reason its is still around is because of its freeness and the loyalty of its users.

 

i run 1000cc injectors w/ uberdata, and i dont lean out on tps tip in.