Stage 1 mods complete still getting fuel cut @ 1.2 Bar!

StuartW

StuartW

New Member
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Hi Anyone reading this Thanks in advance as its becomming rather frustrating now,

Started off with a bone stock Evo 4 import.

Mods i have done
2.75" downpipe
3" de cat
3" cat back

Orange top 560cc injectors

Black plastic cased Evo 5 ECU

New 0.8 bar wastegate actuator (As old one didnt hold pressure and made the car run 1.5 bar of boost and fuel cut)

Genuine Walboro 255

Re wire to new 255 inc relay

Gizzmo Boost controller and 3 port Mac valve (Plumbed with port 1 & 2) Side and front)

3" mushroom induction kit

Fully serviced Inc new fuel filter but running denso iridium plugs, Gap seems around 0.8mm? is it worth having a better grade or different gap plug?

After all of these mods i am still getting fuel cut when it spikes to 1.2 bar so i have to set around 1.1 bar. I am guessing that the ECU stock Fuel cut is coming in? I have the gain on the Gizzmo MS-2 set at 50, have tried all else and cannot seem to stop the boost spike, Air temps pretty low this time of year circa 5c during testing.

The Gizzmo is also set to Open loop, I tried closed but it will not run more than 0.5Bar Maybe i have my ports plumbed in wrong?, But it was as per Gizzmo instructions although they are questionable as it tells you 2 secs to hold buttons when in fact its 5 secs...

Is it advisable to wire in the FCD from my Gizzmo, Or to be safer and buy an AFR gauge, Or as i already have it to fit an adjustable FPR? If so what sort of PSI at idle Say 38PSI??

What exactly is envolved in re mapping the car, A new wire into the ECU loom? If so anyone got any links or clues on this? Is the re flash something i can DIY?

Sorry for all the Q's and await any help given

Stu

Read more: http://www.evoowners.co.uk/10/stage-1-power-upgrades-4-9-a-4466-4.html#post183316#ixzz2oxd6A7v6
 
Billy MR

Billy MR

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S you've fitted all the above and not had it mapped?
 
ElDopesta

ElDopesta

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Hi Stu.

The car will need to be mapped, otherwise you will be hitting a brick wall every time the boost cuts in.

There are a few mappers here on the Forum.

Where are you based?


El
 
evogeof

evogeof

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Hi Stu.

The car will need to be mapped, otherwise you will be hitting a brick wall every time the boost cuts in.

There are a few mappers here on the Forum.

Where are you based?


El

el has returned. where you been???
 
ElDopesta

ElDopesta

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el has returned. where you been???

LOL!

Let's not make this thread about me buddy:blush:

I'm sure you could start a new one, or revive an old flag squad one at the very least:whistling::whistling::whistling:
 
ElDopesta

ElDopesta

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fq-craigus

fq-craigus

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LOL!

Let's not make this thread about me buddy:blush:

I'm sure you could start a new one, or revive an old flag squad one at the very least:whistling::whistling::whistling:

wow welcome back el, and sorry to say the flagsquad is dead! geof is in denial
 
RsvRob

RsvRob

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Get it remapped to remove fuel cut and gain most benefits from all the mods. You'll be doing damage if you don't.
 
B6lee

B6lee

Community Leader
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you can not raise the boost without increasing the fueling to match. to do this you need to get the car re mapped :)





nice to see El showing his face still :)
 
StuartW

StuartW

New Member
Messages
8
Thanks for all the replies, At least now i know there is nothing wrong with the work i have carried out :)

I am based in Teignmouth South Devon, I have Allan Jeffery about 40 miles away in plymouth? maybe there is someone more local or that specializes in Evo's?

I will avoid driving the car for now and run the boost no more than 1 bar.. i suspect that will be safe for now what do you think?

I really wanted to get it properly mapped after i had done all of the mods i wanted too. I would like to drag race the Evo at the pod as a stand in for qualifying points if required, a 13.5 Second Quarter is all i need to do to Qualify, I have also fitted a Competition stage 2 Clutch and lightened larger flywheel to help the launch.

Anyone know what sort of times i should expect from my set up after its mapped?

The only other upgrades that i have been contemplating are a bigger turbo and maybe a 4 branch stainless manifold and larger dump pipe..?? will these give me gains worth worrying about as i would need a re map after these mods are complete?

Thanks again in advance, I should be around more to reply now that the festivities are over :ninja: Cheers All...
 
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