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View Full Version : Injector problems solved

AcuraBro
10-02-2002, 11:38 PM
So I continued tooling around with my mustang injectors, and found the problem. The 42# injectors are just too much w/o tuning, the car runs like ass every time I have them in, yet I'll throw the 30# injectors back in, and viola! Runs fine. Looks like maybe just running an addional 2 injectors w/ an HKS AIC unit may be the answer. I'll get this all worked out for April. For now, the interior is going back in, and the car is gonna be prepped for winter. But aside from that, I now have 8 42# injectors for a mustang just sitting around. :mad:
b18cya-T
10-03-2002, 12:10 AM
what are you using for fuel tuning right now?

are you gonna go with an AEM EMS or somethin next season?
AcuraBro
10-03-2002, 12:13 AM
Hondata my friend. Hondata.
b18cya-T
10-03-2002, 12:15 AM
currently?
AcuraBro
10-03-2002, 12:16 AM
Nah, I wish. I'm not a baller, nor do I sell drugs like everyone always trys to call me on.
b18cya-T
10-03-2002, 12:28 AM
so what have you been usin for fuel tuning? 20psi is a lot of fuckin boost, & i'd be scared of blowin that sheeeit up
AcuraBro
10-03-2002, 12:34 AM
Nothing, that's just it. Well, checking my plugs.
b18cya-T
10-03-2002, 12:42 AM
haha!! nice. just a rising rate fmu?


(i dont know sheeeit when it comes to fuel systems, as well as plenty of other subjects)
AcuraBro
10-03-2002, 12:43 AM
oh yeah. FMU's RULE!
b18cya-T
10-03-2002, 12:45 AM
did you ever figure out why it was leaning out at high boost on the last run of the SR-1 challenge?
AcuraBro
10-03-2002, 12:58 AM
Too small injectors, hence we've gone full-circle.
exciv2000
10-03-2002, 07:13 AM
FMUs suck. Just an idea, but maybe lower the boost for now a bit so it's not running lean on the 30# injectors, get the hondata, and then put in the 42# injectors and tune it. You can't expect the car to run like stock with it untuned, but I'm sure you knew that :) Another option would be to go with something in-between 30# and 42# from RC or other, and see how that runs. With the hondata, you should be able to get rid of the FMU and any other add on crap like missing link bypass valves, V-AFC, etc. There was talk about a group buy on one here recently, I don't think you'd have to search to hard.
newt2
10-03-2002, 08:27 AM
Standalones are the only way to go. Hondata, AEM, doesn't really matter. The Hondatas are easier to work with and the AEM is much more powerfull. Take your pick.
SleeperZ
10-03-2002, 08:42 AM
Yea, brother! He has seen the light!;wor;
AcuraBro
10-03-2002, 11:43 AM
I know, my plans for winter include 3 things. Standalone, dyno tuning, and direct port N20. We're going for fastest daily driven import next season, hoping to dip into the ::gulp:: 10's.
newt2
10-03-2002, 12:00 PM
If you're going to use a nitrous setup, you may want to look into the AEM. You can have the AEM directly control the nitrous injection and the fuel/timing. All of that is built right into the system, as well as boost control and knock control.

By the time you do a Hondata for fuel and timing, a J&S for knock control and a direct port nitrous setup, you've spent way more than just buying an AEM in the first place.

Something to think on anyway.
justin
10-03-2002, 01:52 PM
Yea if you wanna do all that chit AEM will probably work better. If you do end up with the Hondata I can hopefully help you tune it once I learn myself. My Hondata s200 should be here today, gonna try and learn this good over the winter.

Justin
shane
10-03-2002, 03:03 PM
how much is this hondata thing?? for around 1300.00 you could get a system like mine (SDS) and get rid of the distributor:D


http://www.sdsefi.com/civic9.jpg
b18cya-T
10-03-2002, 03:05 PM
damn! that would be cool
shane
10-03-2002, 03:13 PM
okay how the fucj do i add a pic to my post???? it does a link instead of the pic. what am i doing wrong?
b18cya-T
10-03-2002, 03:19 PM
[ img] (url here) [ /img]

w/o the spaces

http://www.sdsefi.com/civic9.jpg

hit quote & you can see what the coding is

EDIT: hmm not working for me either

http://repo.jackmoves.com/albums/album76/rx7_powerslide.gif
b18cya-T
10-03-2002, 03:21 PM
i guess brain is messing around with the programming


so how does that distributorless ignition system work?
shane
10-03-2002, 03:37 PM
fully programable stand alone, it uses a hall effect sensor mounted on the crank pulley. all pricing and other info is here www.sdsefi.com
AcuraBro
10-03-2002, 04:46 PM
Damn, shane brings out the crazy shit, like usuial. I'm still at a loss where this HAI store is where I use the points I aquire. I'll worry about these things more when I have the money. It's like going to a club/bar in your underwear. You won't worry about picking up women until you get your cloths back.
b18cya-T
10-03-2002, 04:48 PM
hmm, i always picke dup more women when i wasnt trying...or wearing underwear!
exciv2000
10-03-2002, 05:07 PM
freeballin' is the best... or as my fiancee calls it, commando
exciv2000
10-03-2002, 05:11 PM
AcuraBro: Haistore: http://www.highaltitudeimports.com/vbulletin/store.php?s=&action=main
Haiparts: http://www.haiparts.com
b18cya-T
10-03-2002, 10:53 PM
Cause I'm Free...
FreeBallin' yea

tom petty 0wnerages you
newt2
10-04-2002, 08:32 AM
how much is this hondata thing?? for around 1300.00 you could get a system like mine (SDS) and get rid of the distributor


http://www.sdsefi.com/civic9.jpg

The AEM is trhe same price and you don't need to install any additional sensors. Otherwise they're almost exactly the same.
Mark_H
10-04-2002, 10:28 AM
Good luck on 10's next year, that would be sweet.
M
AcuraBro
10-04-2002, 10:33 AM
haha, yeah, I have a whle to get my act together, but right now during school, $ isn't really coming in as it normally does, so have some patients with me. I'll make my decision on which stand alone I want when I have the cash to buy it.
shane
10-04-2002, 12:29 PM
The AEM is trhe same price and you don't need to install any additional sensors. Otherwise they're almost exactly the same.


same price? the sds includes coil packs for direct ignition. nothing against AEM but wht not jump on the chance to toss the dist? i mean come on guys disributors are like so 1970's. this is 2002, we dont need no stinking distributors:D anyway with a unit like the SDS you can get rid of a ton of useless wires and crap under the hood. and you wont need a stupid laptop!!!

how is the programing going anyway Pat? one thing i can say about SDS is that it is pretty easy to program, even my dumbass can do it.


anyway Chris its your money, but if you do want to go SDS i can get you 15% off the price.
justin
10-04-2002, 02:00 PM
That SDS is wild...

Justin
AcuraBro
10-05-2002, 02:06 AM
Aside from the fact that you can tune the AEM in theory, but nobody around here knows wtf they're doing when it comes to the AEM.
newt2
10-07-2002, 09:59 AM
I have no time to tune these days. The baby takes up all my time.

I've got it running pretty well though, but it's still pig rich and difficult to get started in cold weather. I'm pretty sure I know what needs to be done to get it to start better though, there's a coolant enrichment table under the start options that makes percentage adjustments tot he base fuel table based on coolant temp sensor readings. I just need to lean down the enrichment for cold temps a bit and that should fix it.

I made some fuel pressure adjustments that cleared up some of the bad throttle response I was getting. It's still not perfect, but I think I can fix that by adjusting the deltaTPS table. Basicly that's a setting that bases fuel enrichment on the rate of change of the TPS sensor, i.e. flooring it quickly vs. slowly pressing it to the floor. The latter works fine but the car hesitates if I depress the throttle too quickly.

I just need to get out in the garage for a couple of hours and play with those settings. The I'll be ready for dyno time. I think 230 at the wheels should be doable with my current setup but I'll be happy with 225. I've decidede that I'm probably not going to raise the boost, if I need more I think I'll go with a direct port 30 shot instead.

The AEM isn't that tough. The big problem a lot of people are having is the low throttle operation. Most tuners are used to dealing with WOT tuning because the stock ECU or a Hondata works fine for startup and daily driving without any tuning (unless you have huge injectors). With the AEM you do every aspect of tuning the engine. I'm going slow because I want to be carefull but I'm learning a lot along the way.
12seccivy
10-21-2002, 01:48 AM
Originally posted by shane
same price? the sds includes coil packs for direct ignition. nothing against AEM but wht not jump on the chance to toss the dist? i mean come on guys disributors are like so 1970's. this is 2002, we dont need no stinking distributors:D anyway with a unit like the SDS you can get rid of a ton of useless wires and crap under the hood. and you wont need a stupid laptop!!!

how is the programing going anyway Pat? one thing i can say about SDS is that it is pretty easy to program, even my dumbass can do it.


anyway Chris its your money, but if you do want to go SDS i can get you 15% off the price.

how can you get such a big discount?
i´m interested in the sds system,just dont have enough $$ right now.
i´ll probably be able to buy one in the next 3 mos or so..
i really need one for my setup and the 525cc injectors in the car now..
it runs bitchin under boost but pig rich any other time
shane
10-21-2002, 06:29 AM
there is a guy on another message boars that sells them to Z car guys at 15% off. i can get you the same deal.