Air Box Mods...... little question for you all

**Coastie** · 2nd June 2007, 20:32

I have the K&N filter ...... but Im unsure as to what to do as far as the airbox mods go..... seen the how 2's and there are obviously 2 bits you can do...

The bit at the bottom and the the bit at the top of the airbox...... which one should I do ? or should I do both

**vectra 120** · 2nd June 2007, 20:47

I would just do the bottom one just unclip it then reset your ECU

Steve

**Coastie** · 2nd June 2007, 21:58

Originally Posted by vectra 120

I would just do the bottom one just unclip it then reset your ECU

Steve

Reset my ecu ??? explain please

**rushy** · 2nd June 2007, 22:02

Just disconnect the battery for about 15 mins. The ECU will then learn the new characteristics of the air filter.

**Coastie** · 2nd June 2007, 22:04

hurrah for you !! thanks peeps, so none of you advise doing the adjustment to the top part of the airbox then ?

**rushy** · 2nd June 2007, 23:02

I'd leave that on mate, the "trumpet" is tuned by length and actually affects torque I am led to believe.

**lee_eardley** · 2nd June 2007, 23:11

do you need to reset the ecu??? noticed on my 1.9cdti 150 there was a slight differance....without reset

**rushy** · 2nd June 2007, 23:29

It was a tip a from a company that remaped a few members cars. It gave Big Phil's GSI and extra 15bhp straight of the bat. He had fitted a free flowing Zorst and filter, but they only started to perform after the reset.

**Coastie** · 3rd June 2007, 07:49

Thanks for that peeps, any more comments would be appreciated

**veccy22** · 3rd June 2007, 11:27

i tried all the stages of this mod ! just panel filter then cut off bottom inlet and finally removed the trumpet ! which gave me better throttle response and brought the fuel economy up above 28 mpg which was a first for my alcoholic 2.2 SRI !! it may effect other models differently ? but mines definately better with the full mod done !