BBM charger 50mm over boost problem

[a98pmalcolm 0]

Hay guys. My G60 is being mapped and set up and we put the 440cc injectos in and the fueling is perfect! im running the 50mm pully with the BBM charger, 1.9 bore, piper cam etc and at low end its great power like 190BHP at 2000 revs but as it gets to 5000ish the power just falls and tryd to go over 1.5bar of boost and be comes unstable and un efficient.

HAs anyone else had remaps with the 50mm pully on BBM screw charger and have problems?

 

Please help

 

Thanks

 

PAul

 

:help:

 

 

 

Thats the power graph so far

[flusted 0]

YOUR isv WILL BLEED THE BOOST OFF AT 1BAR and pull some timing i expect.

 

soz about caps lock

[junkie 0]

What head are you running?

[junkie 0]

Are you looking at the graph right, sure the line your saying is the torque, basically the bottom line is HP top is torque?

 

I would say the head is flowed and is coping with the boost then at higher levels its getting unstable, the whole problem of the 8v counterflow design, basically naff.

[a98pmalcolm 0]

yer its a flowed head by the engine shop.. problem is aswell my mate at backdraft motorsport said map sensors only go to 1.5bar.

 

Iv been on the BBM site and using the 53mm pully will be 1.3 car rather than the 50mm which im using now and produces 1.5+ bar

 

So im feeling that the 53mm pully is the way forword and resolve the issue! what do u think?

 

Thanks

Paul

[junkie 0]

I cant remember exactly when they put a new MAP sensor on mine but either when the BBM was done or the turbo, they used the MAP sensor off a MK4 golf i believe then went 3 bar MAP sensor but im sure the issue was still there.

 

Yea do the 53mm by all means, it cant hurt.

[a98pmalcolm 0]

Yer Jabba have it in stock! so its worth it u suspose, just more money :( but resulves the issue it resulves the issue....

[flusted 0]

the standard map senor only goes to 1bar, then bleeds off boost out the isv. I ditched my isv.

[junkie 0]

Any closer Paul?

[a98pmalcolm 0]

hay bro i sent u a personal email! erm not ot great news but could be worse!