b204 stage 4

[Robson 88]

what do I need to go stage 4 on my b204 I have already on stage 3 and also got a td04 15t turbo

 

[Andy_Mk3]

You'll need bigger injectors, 3 bar map sensor and a 3" exhaust ideally. Can be done on a 15T.

 

[Robson 88]

will vxr injection work I already got 3inch down pipe. am aiming for 300bhp

 

[nige-p]

vxrs will do it 300bhp on a td04 15t is it on its absolute limit

 

[Andy_Mk3]

As above yes. You'll want a live map to get the most out of it too.

 

[Robson 88]

live map sounds good to me been talking to gareth he says I would be ok on the standard injections just up grade the map and get a 3 bar map sensor

 

[Andy_Mk3]

Saab reds will be pushed to their limit at that power though.

 

[Robson 88]

I was thinking that. but I be happy with 290bhp or just under. Gareth fitting my turbo next weekend and leaving at stage3 map for now. as my t25 actuator has gone. which he says be ok for now

 

[Andy_Mk3]

Stage 3 to stage 4 isn't a big gain. I'd either stick with 3 or go 5.

 

[Robson 88]

stage 4 should be enough for the 15t I would of thought. but I can get it on stage 5 I think I might

 

[Andy_Mk3]

I went from stage 2 to 5, didn't really feel 3 or 4 were worth it!