overboosting

CVH and Zetec tuning, suspension and braking mods.

overboosting

Postby SEG1 on Tue Jan 02, 2007 5:33 pm

i have i xr2i with a rs turbo conversion.the engine was out of a fiesta.i have a boost gauge and a boost contorler.it runs 6psi fine but as soon as it goes over 6psi the boost jerks on and off.
can someone plz tell me what i could do to run more boost.i have low comp pistons and a t3.so whats the most i can run??
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Postby black2 on Tue Jan 02, 2007 6:19 pm

As you hav'nt stated you have a chip, you will only be able to run 9psi tops before the boost protection cuts in from the ecu, fitting a chip will get over this problem and you can turn the boost up, BUT make sure your fueling is matched to the increased boost preasure, else bye bye pistons :lol:

I suggest you go for a "195" chip, beige injectors and an cossy fuel pump as you have low comp pistons so you should be able to run at least 15psi, again make sure its all set up properly, that way you will avoid any nasty surprises.

HTH.

Gareth.
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Postby j7aoc on Tue Jan 02, 2007 7:26 pm

As above if you have a cheep boost gauge they some times's can be 3-6 psi out so it could be over boosting before you thing
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Postby SEG1 on Wed Jan 03, 2007 3:58 pm

thanks guys.
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Postby SEG1 on Mon Jan 08, 2007 11:16 pm

i have just found out that i have beige injectors and a 195 superchips' chip in my ecu.its a plug and play chip.and im still over boosting.
what could be wrong?
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Postby j7aoc on Tue Jan 09, 2007 11:00 am

I would try taking out the chip but don't drive it hard just to see if it's over boost. Don't mess with the chip when the Ignition is on other wise it damage your ECU. What boost gauge do you have? if it's cheap like those one's that change colour then bin it
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Postby SEG1 on Tue Jan 09, 2007 3:25 pm

yep it changes colour!!!!
pink blue red green and white lol
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Postby j7aoc on Tue Jan 09, 2007 3:36 pm

RS_seg :yep it changes colour!!!!
pink blue red green and white lol
Bin it and buy a auto meter or nomad new there about £50-60 second hand £30ish. try taking the chip out like i said if nojoy then adjust the actuator turn the stem so it get's longer a few turn's at one time that will lower the boost
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Postby SEG1 on Wed Jan 10, 2007 12:31 pm

i just bought a level 6 ecu and the loom if i fit this will it defeat this problem?
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Postby j7aoc on Wed Jan 10, 2007 1:02 pm

RS_seg :i just bought a level 6 ecu and the loom if i fit this will it defeat this problem?
You will need to have it maped and fitted £700-£1000 My car run's on the standard loom and ecu just have a chip that is mapped and it should do 220-260bhp it's running 20psi What is you engine spec?
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Postby SEG1 on Wed Jan 10, 2007 11:52 pm

beige injectors
195 chip
low comp pistons
Kent cam 35
stage 2 head
blueprinted bottom end
i dont no about the fuel pump how can i tell if its uprated?
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Postby j7aoc on Thu Jan 11, 2007 12:01 pm

RS_seg :beige injectors
195 chip
low comp pistons
Kent cam 35
stage 2 head
blueprinted bottom end
i dont no about the fuel pump how can i tell if its uprated?
The escort cosworth fuel pump is identical to the frst so you can't tell them apart but you will need the cossy one or uprated one as it need's to keep up with the chip/injectors as your engine will go bang
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Postby SEG1 on Thu Jan 11, 2007 8:49 pm

where can i find the fuel pump?
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Postby j7aoc on Thu Jan 11, 2007 10:43 pm

RS_seg :where can i find the fuel pump?
Try posting up in the wanted forum
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Postby SEG1 on Fri Jan 12, 2007 11:19 pm

i mean in the engine .
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Postby j7aoc on Fri Jan 12, 2007 11:47 pm

RS_seg :i mean in the engine .
:lol: Sorry it's under the back seat you can see it if you take it up but to take it out you need to get under the car and drop the fuel tank down to get it out
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Postby SEG1 on Sat Jan 13, 2007 12:59 pm

ok thanks.will it have any codes on it?so i can tell if its a cossie or fiesta
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Postby j7aoc on Sat Jan 13, 2007 1:55 pm

RS_seg :ok thanks.will it have any codes on it?so i can tell if its a cossie or fiesta
I swaped mine for a gen ford cossy and there's no way to tell them im not sure if there's apart number you could ring ford's and ask them for a part number
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Postby SEG1 on Tue Jan 16, 2007 7:05 pm

i took the superchip out and it hasnt overboosted all day!! why is this ?
is the chip f**cked?
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Postby Oranoco on Tue Jan 16, 2007 8:41 pm

Clean the chips conatctas along with those on the ECU using a non abrasive contact cleaner (Electrolube etc) then refit the chip. The chips themselves are rarely at fault so it may be worth speaking to a reputable tuner for advice if this doesn't cure it
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