WHO'S PI**ED ON MY CHIPS ?
22 October 2003, 09:06 PM
#1
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I’ve had a MY94 WRX for the past four years
Two years ago I fitted a full decat exhaust system and
A blitz induction kit, but left everything else as standard
Recently I decided to increase the power so I looked into
Boost Controllers, FCD & AFR. But then read about
Scoobyecu which is a second map uploaded to a chip and
Mounted in the spare IC socket on my type of ECU
You also have the facility to fit a switch which allows you
To switch between the two maps and this is where my
Problem begins.
On my old map the boost ran 11psi at full throttle in all gears.
but on the new map I only get 6-7 psi at full throttle in1st & 2nd
gears then a superb 15.5 psi in 3rd 4th & 5th.
So I then thought this was the characteristics of this map until suddenly
on two occasions I got 14psi in 1st & 2nd gears.
But I have not been able to recreate this again.
When I switch back to my old map my boost hits 11psi
In all gears every time.
The ECU doesn't know which gear I'm in,
So now I'm confused.
Any help or advise would be much appreciated
Tony.
Two years ago I fitted a full decat exhaust system and
A blitz induction kit, but left everything else as standard
Recently I decided to increase the power so I looked into
Boost Controllers, FCD & AFR. But then read about
Scoobyecu which is a second map uploaded to a chip and
Mounted in the spare IC socket on my type of ECU
You also have the facility to fit a switch which allows you
To switch between the two maps and this is where my
Problem begins.
On my old map the boost ran 11psi at full throttle in all gears.
but on the new map I only get 6-7 psi at full throttle in1st & 2nd
gears then a superb 15.5 psi in 3rd 4th & 5th.
So I then thought this was the characteristics of this map until suddenly
on two occasions I got 14psi in 1st & 2nd gears.
But I have not been able to recreate this again.
When I switch back to my old map my boost hits 11psi
In all gears every time.
The ECU doesn't know which gear I'm in,
So now I'm confused.
Any help or advise would be much appreciated
Tony.
23 October 2003, 12:24 AM
#2
Who supplied your Scooby ECU and how long ago?
Get back on to them, I know Scott T has sorted some maps out that had a percieved boost drop ( actually limp home mode came on IIRC ) and new mapping / chips cured it and more power!
If your Scooby ECU supplier can't then likely Scott T or Pavlo can, at worst a small fee for new chips / map ?
Get back on to them, I know Scott T has sorted some maps out that had a percieved boost drop ( actually limp home mode came on IIRC ) and new mapping / chips cured it and more power!
If your Scooby ECU supplier can't then likely Scott T or Pavlo can, at worst a small fee for new chips / map ?
23 October 2003, 08:13 AM
#3
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It was Scott t who supplied the scooby ECU.
Spoken to Scott and he agrees ECU cannot be gear
Specific he suggests cleaning boost solenoid as
could be sticking due to having to work a lot harder.
Tony.
Spoken to Scott and he agrees ECU cannot be gear
Specific he suggests cleaning boost solenoid as
could be sticking due to having to work a lot harder.
Tony.
23 October 2003, 09:00 AM
#4
In the lower revs this map sets the Boost Solenoid between 75%-90%, the standard map only runs at approx 45%-50%, therefore the Boost Control Solenoid is being driven alot harder on the remap.
As the revs rise alot quicker in 1st and 2nd I would suspect that the Solenoid is sticiking and not being able to catch up in the time taken to rev out.
As mentioned before, clean out the boost control solenoid with brake cleaner, along with all it's joining pipes (including the bottom pipe to air intake expansion box, as this has a brass restrictor in it).
As the revs rise alot quicker in 1st and 2nd I would suspect that the Solenoid is sticiking and not being able to catch up in the time taken to rev out.
As mentioned before, clean out the boost control solenoid with brake cleaner, along with all it's joining pipes (including the bottom pipe to air intake expansion box, as this has a brass restrictor in it).
23 October 2003, 11:01 AM
#5
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Just spent the last hour cleaning out the boost solenoid
And all related pipes with brake cleaner.
Test ran car again 1st gear boost upto 8psi 2nd gear upto 10psi
3rd 4th & 5th up to 16psi
looks like your on the right lines here scott.
And all related pipes with brake cleaner.
Test ran car again 1st gear boost upto 8psi 2nd gear upto 10psi
3rd 4th & 5th up to 16psi
looks like your on the right lines here scott.
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