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pulling back problem

909 Views 17 Replies 5 Participants Last post by  FLYER1
hi guys ive asked before about this problem and still cant sus it out ive fitted ralliart ecu to my 5 my actuator was knackered so yesterday i fitted my forge one its had new ngk iridiums when i accellerate hard up to 1bar and above it pulls back as if its running on 3 cylinders im running a blitz dsbc to up the boost and disconnected it like weebl said on saturday and connected the boost pipes back standard straight to the actuator it boosted up to about 0.8 bar and was slow but completely fine didnt run poor at all but when i go above it plays up like hell and no i havent changed the fuel pump yet but the filter has been done
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I have the same problem, if I run the standard ECU it will run up to 1.2+ bar with no fuel cuts.. or holding back.. But if I put my Ralliart Ecu in with the below mods:-

Greddy Boost controller.
Turbo Back Mongoose Exhaust
Apexi Cone filter
Denso Iridium Plugs

It will Boost up to 1 Bar fine but it feels like it is holding back after 1 Bar. (A bit like a fuel cut )

This is with out the fuel pump being fitted....

I believe that I require the fuel pump to be fitted before I can go past 1 Bar. As standard on the car is 0.9 bar. I am therefore waiting to fit the fuel pump before fitting the Ralliart Ecu again....

Weebl do you believe this to be the case...

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Hi Weebl

I do not understand why it is holding back after 1 Bar as is "motorboy's".. As with the standard Ecu I can run up to 1.2 bar nearly 1.3 with out any fuel cuts at all..

It feels just like a fuel cut but at 1 bar... with the Ralliart ECU (RA420996R1)

What else could it be then? :confused:

I have just been down to the garage and seen that the Denso plugs i got were the IW22#4's and I believe that to increase the boost I need IW24's...

Would that make the difference when putting in the ralliart ECU as it would be putting in more fuel with the increased boost... and so blowing the plugs out..

Please tell me so as I am now running out of ideas..

motorboy which pipe... do you mean the one to the fuel reg...
It may sound daft but what is the sas/egr valve :confused:

Do you mean the "Secondary air control solenoid Valve"

if not can you add a picture.

Won't it stop it from running correctly with this disconnected. :confused:
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