what sort of bhp can i expect from my 2.5 engine?

Post Wed May 18, 2005 2:14 pm

early 325i m20 in good nick with recon. head

fitted with...

NGK Plugs

K&N panel filter

Full scorpion exhaust system

soon to be added...

BTB 6 branch manifold

Zone chip

any ideas what sort of bhp it will put out?

Post Wed May 18, 2005 2:19 pm

is it a wild 'zone chip?!

if it is i'd be reckoning 178-182bhp without the manifold (the 'zone chip is apparently good for 7-12 bhp) maybe add another 5-10bhp for the manifold...

stock is 171bhp so thats a fair increase, and all your mods probbly make the car more 'driveable'

Post Wed May 18, 2005 2:25 pm

If it's putting out 170bhp to start with then that's good.

Any increase over that with the given mods is a billy bonus.

In theory could be up to 180bhp with the Exhaust and Free-Flow filter...

With the chip, manifold, and BBTB, would be nice to see 185bhp.

Post Wed May 18, 2005 2:52 pm

i`ll get her down to a rolling road when its ready.
thanks for comments guys, 180+ would be excellent,
i think its good for running 170 in factory spec

Post Wed May 18, 2005 4:44 pm

the early lumps have been shown to make factory power and sometimes over as standard