Hello everyone, i have a st escort cosworth with stage 1 superchip and uprated actuator, i havent tried the car without it but i have to say, i dont like the characteristics of the engine at all. It gets way too mutch fuel and sometimes it gives a bang in the exhaust system when i release the throttle. Else if i keep it on gear and release the throttle it will brake like engine is stalling and its really annyoing.
If i drive on slow speed in first gear the car will sometimes bounce forward like its somewhat stalling again i think it might because of the over fueling.

Can i fix this with another aftermarket chip or do i have to put it back to original? Its a Superchip that is fitted

Edit: it also got a kn panel filter and full magnex decat exhaust

 

mine was the same mate put it back to standard

 

mine was the same on the superchip mate.. I now run a MSD chip and the difference is unreal.. most noticable on the engine braking as you say above...

Matt

 

thanks for reply guys, i might run my orignial then until i eventualy get some real tuning done to it. was thinking about putting megasquirt on it as read in latest fastford and a big turbo and injectors. or just a msd chip

 

Mine runs just fine on MSD chip, but Superchips wasn't very bad either.


Standard car is undriveble in my opinion. No power whatsoever.

 

mine has a superchips chip fitted and runs fine, are you sure it isn't something else thats at fault?

steve

 

i also had/have 1 of superchips chip’s & it made my car cut out or run like a bad of shit so they’ve sent me a new 1 but iv not got round to testing yet
as it took soooooooooooooo long for them to send it

 

have you got a dump valve fitted to it?

 

small turbos and sneeze valves dont mix

 

yeah my car has a dump valve fitted and it really makes a high sound compared to another guy around here with a large turbo his dosnt blow halfway as mutch as mine does at only 2500 rpm 2nd gear.

will it dump false air and thats the reason engine is over fueling?

its fitted on cold side just before throttle, so i guess it makes sence the air entering the turbo is registered at the maf and then it is dumped out of the dumpvalve and overfueling.

 

ive had a collins dump valve on mine(the one that bolts straight to the turbo) and the car has never missed a beat....it drives faultlessly.Maybe it depends on which dumpvalve and where u locate it?

 

ditto and mine is fine

steve

 

Mine used to have weird runing problems. Was dirty ECU multiplug and failed VSS. Now engine runs fine even with dumpvalve (Bailey one)

 

thanks for replys guys,
i might change my dumpvalve then or buy another chip , might be my maf tho witch is from a transit, but it should be the same one.

 

can someone post a pic of the collins valve in situe please id be intrested to see this product

 

On eec-iv ecu'd cars if the dump valve is after the MAF sensor the dump valve must be of the recirculating type or the engine won't be getting all the air the MAF sensor is reading and fuelling will be off.

I'd also be surprised if a Transit MAF sensor is the same as the small turbo Escort sensor, even if they may look the same but the calibrations are likely to be different.

 

Still some cars with twn piston or similar dump valves drive just fine.

 

A testament to the level of detail Ford go into for dealing with failure management

 

I wouldn't be so optimistic about failure managment on small turbo Escos. No "check engine" light, no idling procedure for VSS failure.... etc.


All kinds of MAF equipped turbo cars run just fine with proper dump valves. Imprezas run justfine, Evos sometimes have problems.

On my Escos only effect is that it spits flames from time to time

 

The engine check light code is in the ecu it's just that someone in their wisdom chose not to use it And yes, a VSS failure isn't handled well, it doesn't appear that a MPH_SENSOR_FAILED_FLAG check is carried out by the desired idle calculation routine.