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EJ25 quadcam \"NO SCARED CAT!\"

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MikeM Buggy Head

1,429 posts · joined Aug 2003 ·

#148548
Have you checked the simple stuff...

With the car turned off, if you push the accelerator pedal to it's limit (floor) does the throttle body go through it's full movement. To get an EJ2x to work with the standard beetle peadl I beleive you should be useing the cruise control attachment to the throttle body as it does not require as much movement of the cable to acctuate the butterfly.

The engine will have to re-map if you've changed the Cat back pressure, and may be in limp-home mode at the moment.

I think it's likely to be the throttle body not traveling full movement.

Best of luck
Mike


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Jenny Officially Full-On Dubber

352 posts · joined Jun 2003 ·

#148607
Check your fuel flow rate. A few people have had probs in this area.
What size pump are you using and what's the set-up?

Baja Wes V6 Baja Pioneer

3,119 posts · joined Aug 2002 ·

#148679
For people reference, I have suggested by email to Pete the following;

* small negative effect at higher rpm from the restictive intake tubing, but low end power should still be good.

* possibly incorrect ECU or air flow meter

* The buggy is just heavy, so will never be a drag car

* ECU learning will have virtually no effect on open loop performance, so I don't think driving it for a week will make any major gains
Wes - www.offroadvw.net - 200HP Quad Cam V6 in a VW Baja - with climate control... 🙂
www.taylorcycles.com.au - My DH MTB racing brothers shop.

1303Steve Scirocco Rare

8,650 posts · joined Aug 2002 ·

#148887
Hi

Do you have the speed sensor hooked up? Also check fittings and wirring on the map sensor if they have one.

1302Steve

pete wood 23 Windows of Awesome

6,828 posts · joined Jan 2004 ·

#148910
Yes to all, but still haven't tested the air cleaner hose issue yet.
Also the exhaust back preasure should not be radically different. The system is fairly restrictive and very quite at idle.:thumb
"stoopid is stronger than axles"
http://drivingnotpolishing.blogspot.com.au/

Baja Wes V6 Baja Pioneer

3,119 posts · joined Aug 2002 ·

#148967
Pete, I think your buggy will be at least as heavy as a beetle, and probably heavier than a standard beetle.

A GS Limo long wheel base buggy with alloy bar work, a kombi gearbox and a type 4 motor weighs about 800kg.

Then for yours you can add the weight of;
* the suby motor, arguably not much more than a type 4
* The radiator, fans and fluid
* The extra fiberglass in your body that is lifted
* You have steel bar work, not alloy
* the subframe under your pan is insane and must weigh alot, you should have some idea.
Wes - www.offroadvw.net - 200HP Quad Cam V6 in a VW Baja - with climate control... 🙂
www.taylorcycles.com.au - My DH MTB racing brothers shop.

pete wood 23 Windows of Awesome

6,828 posts · joined Jan 2004 ·

#149110
To wes,
If you are right about the weight, then my car may not be far from the 982kg needed to turbocharge the engine.
Then it might be a dragster.
What do ya reckon? 😉

p.s. Of course, I will have to get it to run properly first.
"stoopid is stronger than axles"
http://drivingnotpolishing.blogspot.com.au/

Brad Wolfsburg Elder

3,764 posts · joined Aug 2002 ·

#149121
Looking at that sub frame .. :o:o:o:o !!! that buggy will be heavier than a Beetle for sure.

I bet it tips the Tonne on the scales..........

[Edited on 10-3-2004 by Buggy Brad]
Brad
Why copy when you can own an original ?
Meyers Manx Australia

pete wood 23 Windows of Awesome

6,828 posts · joined Jan 2004 ·

#152044
Found the scared cat. Turned out I had a wiring fault between the ignitor and one side of the coil packs. Now it goes UNBELIEVABLY hard! :thumb
"stoopid is stronger than axles"
http://drivingnotpolishing.blogspot.com.au/