Hi I have a 2005 blob sti with supporting mods
MD321T
Performance headers
3" japspeed decat turbo back system
650cc injectors
255 fuel pump

Car went in for mapp Friday and was pulling 360bhp at 1.3bar but continued to be the same all way to 1.7 only could get 360bhp and 290lbs... Anyone have any ideas?
Should be getting at least 420bhp and 380lbs

 

Something's not right , 0.4 bar boost increase with no power gain?

Boost leak?
Turbo issue?

Who was the mapper, Did he not have any comments or thoughts as to why it was not performing?

 

Turbo spooling fine no boost leaks. Timing all fine. Had both belts off to check. Mapper is Andy in Darwen. Car still with him now. He's great mapper really knows his stuff. Andy is keeping car for weeks see if he can find problem. Just seeing if anyone else on here has had same problem so can check if it's that

 

Sorry Anthony... Stupid iPhone.!!

 

Don't know an Anthony but I do know an Andy that works out of cams which is in Darwin with Brian now and again.

It's down quite a bit too as you said should be in the 400's on bhp with decent torque, 290 is about 100lbft down on what it should be doing.

 

He means Ade E Gaz

Tony

 

I know who you mean now, shouldn't have any problems there then

 

Yehh he's top. Really knows his stuff.. WOuld reccomend him 150%!!

 

I'd best sort it now ! lol

Thanks for the kind words lads

Bit of a wierd one , but I'm confident we can get to the bottom of it

Ant

 

Big thanks to ant. He's solved the problem... Car booked in for dyno Monday.. Reccomend him 150%!!

 

Nice one, Good luck, Do you know what the issue was?

As my thoughts were exhaust related.

 

Nope weird one but was faulty knock sensor holding engine back. Nothing was coming fault on ecu tho... Ant has car until next Friday spoke earlyier in week said its running mint now.

 

Big thanks to Ant picked car up last night... Running awesome!!ooking forward to a run out this weekend!