Wi Question....

[Jimlad]

Ok... my car is currently producing 275bhp.

This was mapped with a dodgy actuator.

I have since plopped a nice uprated actuator in there and am also gonna get some water injection before I get the remap. ( was supposed to get it remaped ages ago.. forgot tho ! .. DOH ! ).

My question is... what sorta increase should I expect in bhp ?

They say if you went from a good working actuator to an uprated one you should see +5bhp. But my stock one was performing very poorly.

What difference will they both make ? Any ideas?

ta !

[EmR2T]

probably allow you to up the boost by another psi or so so I would imagine ~5 from the actuator and then maybe another 10 on top. An extra 15bhp perhaps? 290bhp would be ok :)

[Fidgits]

well, considering most rolling roads read over...

and say, your looking at a 10bhp increase max..

my guess would be your actually at 275bhp now ;)

[Jimlad]

yeah.. probably about 290 ... then I've more or less hit the limit with what I can do with the stock turbo/internals... :(

But I have plans.... :D

[EmR2T]

yeah rolling roads do tend to. I have a dyno from Star for mine from about a year ago as a standard rev2 showing 230bhp. Got it dyno'd the other week with mongoose cat back and blitz induction, stock boost etc.. and it came up 252bhp! So either I have some sort of magic engine or the road is way off ;)

Star had said it was one of the strongest rev2's they had dyno'd though so hopefully when I get this mbc/fcd and gauge fitted tomorrow I should get some decent results.

I can't decide whether it is worth getting a decat pipe made up as I hear varying opinions on this one. I can get a custom powerflow section made for 80 quid which is tempting as I had a powerflow on my G60 and it was well made and fitted by the place.

What do you reckon? :)

[Jesus]

EmR2T... Get the Aussie de-cat pipe. Worth the money.

Actuator will allow you to hold boost... if you up it more you should get a few more bhp for it. You won't eliminate wastegate creep completely though.

Likewise, water injection will simply lower charge temps and hence chamber temps to allow you to run higher boost with less risk of detonation. As you've not yet upgraded your intercooler or gone chargecooler yet, then WI would be your best route. The higher boost will be held with the uprated actuator.

[Jimlad]

Jesus... full of info as usual mate !!

thanks... lol

This is just an idea to play with until I start the serious engine work.

[Jesus]

Jesus... full of info as usual mate !!

thanks... lol

...just trying to be helpful mate. I haven't got all the answers, and even all the answers I've got aren't necessarily the only answer! Make sense?... confused myself!

[Bibbs]

for a given boost pressure WI actually drops BHP ..

But it allows you to run more boost safely :)