Ok guy's I really need your help i'm so close but yet so far. First i'll tell you what i'm working with. Drag 3 kit, rc370cc injectors, turbo XS boost controller, and Tial wastegate. This is my probelm... The first time I cranked my car up it was sputterring real bad and black smoke was coming out of the exhaust. The black smoke I kinda expected because I have 370cc injectors and still have the 12:1 fmu disk. (Getting V-afc tommorrow to fix that probelm) Then the car completed died. While the car was running it sounded as if there was a vacuum leak but I could not see anything, I sparyed water I the general area and still nothing.
Another issue I have is with the inline fuel pump. The directions that came with the kit are CRAP. Can you guys tell me were to locate the "power source" that is on when the car is in the "on" postition. I found a power source but I don't know if it is the right one. It's a black and yellow wire located by the disributor. Is that what you guys are using?
Number 2: The Tial wastegate did not come withany instructions: which part of the wastgate goes before the throttle plate and which one goes after. The hose on the side of the wastegate or hose the one on the top of the wastgate?
Last but not least: What are you guys using for your "before the throttle plate" vacuum source? I just can't seem to fin one
Thanks alot guys I will apprecaite all your replies,
Ian


[Modified by Nerv2g, 4:05 PM 2/14/2002]

 

OK yeah for one thing without a VAFC I'm honestly surprised your car STARTED with 370s. Spraying water won't do you much good finding a vac. leak either since the leak will just suck the water IN... try a light spray of WD-40 if anything, then you notice when the engine injests that stuff.

That yel/black wire on the distributor may be a good bet, but DO NOT run your fuel pump off this wire - you can use it to activate a relay though, and use the relay to connect the fuel pump directly to battery or alternator power. I personally was using a relay that I initially installed for my fog lights to power my fuel pump, and had a switch on my center console so I could conveniently forget to turn it on before boosting.

On the wastegate issue - unless I have a serious misunderstanding of this, you don't use the top port on the WG unless you have an electronic boost controller - with a manual boost controller like the XS you just hook it up to the bottom port. The most convenient pre-throttle body source is usually the brass fitting right on the turbo outlet - if you don't have one, consider drilling a hole in the output pipe from your intercooler and tap or epoxy a little vac fitting there to connect to the wastegate.

 

Thanks alot man. I think i'm just gonna take the 370's out for now, until later down the line I decide to turn the boost up. With the wastegate I understand and will disconnect the hose on top of the wastegate when I start work on my car today.
As for the yellow and black wire I will run a relay as you suggested. Thanks for all the help and hopefully at the end of the day i'll hear PSSSSSSSSSHHHHHHH!!

 

The correct place to tap power for the DRAG fuel pump is on the main relay which is located under the dash. On Integras, Preludes and older Civics its under the instrument cluster and slightly to the left. On the newer Civics (96+) its more towards the passenger side. You can locate it by cycling the ignition key between the acc 1 and acc 2 positions. You will hear the main relay click on and off as you turn the key back and forth. After you locate the main relay (it's usually a gray or brown coloured plastic about 1.5" square), use a test light on the connector pins. The wire you want to tap is the one that will light the test lamp for about 1 sec., then go out. If you listen carefully you will hear the factory fuel pump buzzing in sync with the test light. Usually the correct wire is yellow w/ black stripe, Pin 7.
Don't forget to check your polarity on the pump... it's somewhat common to reverse the wiring. Hope this helps...

 

You don't want to tap the power to the fuel pump into a wire that has constant power. I don't know what car you have, but f you do fnd the PCM-FI main relay it will be pin 4 or pin 7 that you need to tap into. Your fuel pump should only come on for a second when you turn the ignition to ign. 2.

As for the WG, if you are using an MBC you should go ahead and attach a vac hose from the side port to the port on the side of your compressor. Whether the turbo is a t3/t04e or t3/to4b there is a little hole in the side of the compressor for a brass fitting included in your kit for that very purpose.

Your fuel problem can be summed up easily...Vortech 12:1 FMU. If you have that on there it will dump lots of fuel into your car at idle until you tune it down. As previously stated you should have put in the fuel controller before the injectors install.

BTW, the reason your car died is most likley because your car is not used to all that fuel yet. Just keep working with it when you get that fuel controller and you will be fine.

 

Here's a pic of my Turbo XS MBC hooked up on my TIAL. A few member's have had overboosting probs, but I haven't yet(knock on wood) The vacuum hose on the right goes to the compressor housing. Another option is to run it off of the intake manifold, before the throttle body.

 

FMU only increases fuel pressure under boost. It is a very rare instance that a stock ECU can idle 370s at stock fuel pressure without some kind of electronic intervention.

 

where do you guys mount the inline fuel pump that comes with the Drag kit?

 

heheee... I zip-tied it to my upper strut brace... but ideally you should mount it with a bracket to the firewall.

 

Mounting the DRAG pump to the tranny or block makes it MUCH quieter since its isolated from the chassis by the mounts...

 

Thanks guys for all the help. I tried to put the stock injectors back in, but I misplaced on of the clips. I found it though and will be putting the last injector back in today.
As for the fuel pump... I'll wire it under the dash as you guys have suggested.
Once again thanks for all the help and the pic help was excellent. So close but yet so far Better to do things slow and right then fast and wrong


[Modified by Nerv2g, 6:41 AM 2/16/2002]