fiestaturbo.com

[Ramsay]

I bought a wee red fiesta rst about 2 months ago which was meant to have a standard engine apart from an exhaust, filter and T3 turbo. The turbo was set to boost at 7psi but was smokey so I got an RS specialist with a good reputation to fit a brand new T3 and -31 actuator. He also set the boost to about 7-8 psi with the actuator as it has no bleed valve or amal valve and it was fine. Yesterday I had the car out for a spin and it suddenly felt a lot quicker... the dump valve was a lot louder and the boost gage was peaking at 14 psi!!! Any ideas what could have happened to it? I looked at the ECU to see if it had a piggyback chip sticking out of it but it doesn't

I don't want to damage the engine, any advice would be great!

[Excursion]

Check the hose from from Inlet manifold to actuator...

[Oranoco]

As above mate. You need to get things looked at as that is far too much boost for the blue injectors and factory map. Something will pop and it will be expensive.

Mind you you do get a nice paperweight.

[Ramsay]

Cool, I'll get it booked into AVA for a RR sesion ASAP then, cheers guys

[timmy turbo]

It must be chipped mate, the standard ecu cuts out when boosting above 10 psi, if your boosting at 14psi and its not overboosting and cutting out then it must be chipped, maybe the main ecu has been remapped.

[timmy turbo]

The stage 1 remap allows anything upto 15psi. Im running 12psi through the standard blue injectors with the standard T2 turbo with the stage 1 chip and ive not had any problems, just dont expect your turbo to last as long.

[Ramsay]

It must be chipped mate, the standard ecu cuts out when boosting above 10 psi, if your boosting at 14psi and its not overboosting and cutting out then it must be chipped, maybe the main ecu has been remapped.

Yeah I was thinking that it should cut out if the ECU was standard too but there's no obvious signs that it's been chipped but you're right, I guess it could be re-mapped I'll get AVA to check it all out just to be on the safe side, I could do without having to replace pistons!

[timmy turbo]

Yeah good idea mate better safe than sorry, i would guess its got the stage 1 remap 165bhp, it should be fine.

[Oranoco]

Unless of course the ECU isn't seeing the boost. If there's nothing plugged in on the underside of the ECU it isn't chipped and the boost levels you are suggesting are potentially extremely hazzardous to the safety of your engine

[Ramsay]

Yeah good idea mate better safe than sorry, i would guess its got the stage 1 remap 165bhp, it should be fine.

Maybe, it still doesnt explain the sudden jump from 7psi to 14psi... it put a mighty big grin on my face but i'll be taking it very easy until it's all checked out

[Ramsay]

Unless of course the ECU isn't seeing the boost. If there's nothing plugged in on the underside of the ECU it isn't chipped and the boost levels you are suggesting are potentially extremely hazzardous to the safety of your engine

Nothing plugged in that I can see, there's just a plate over the diagnostics port (I think that's what it is anyway). So doe's a stage one chip do more than just set the boost limit to around 14psi?

[timmy turbo]

I can imagine mate. Something like an extra 30bhp all of a sudden. Great

[timmy turbo]

Yes it also alters all the fuel and air intake aswell, if it hasnt been chipped but your running at 14psi then you will be running lean and will probably pop a melt a piston. bad news, its alright upping the boost but evrything else has to be altered aswell.

[Ramsay]

Yes it also alters all the fuel and air intake aswell, if it hasnt been chipped but your running at 14psi then you will be running lean and will probably pop a melt a piston. bad news, its alright upping the boost but evrything else has to be altered aswell.

Ah right, I thought it was just the stage 2 chip that altered the fuel and air intake, thanks for the help chaps

[timmy turbo]

The stage 2 chip requires the bigger beige injectors, the uprated fuel pump and obviously another remap.