more power??

more power??

Author
Discussion

funbobby

Original Poster:

1,636 posts

265 months

Wednesday 16th October 2002
quotequote all
any ideas on how i can squeeze bit more power out of my s2 without spending a fortune? wots peoples opinion on stainless exhausts-do they sound good and will they increase power at all?? cheers

JSG

2,238 posts

290 months

Wednesday 16th October 2002
quotequote all
Sports exhausts sound good, but in some cases can actually reduce the power of the car due to not providing the required back pressure.

Not sure what sort of budget you have in mind, but any cash would prob be best spent on making sure the car is set up right, ie rolling road session. Brake and suspension upgrades will also improve your car's performance, however the best thing to start with is the driver - I found that half a day's Ride Drive session with Madcop made the car a lot faster

Cheers,
JSG

dern

14,055 posts

286 months

Wednesday 16th October 2002
quotequote all
IMO the weak point in going faster is the handling and new shocks/springs and a decent set-up would do wonders... unless you just want to race up and down outside McDs

Regards,

Mark

pete_w

646 posts

270 months

Wednesday 16th October 2002
quotequote all
Sell it, buy a Griffith, no use putting off the inevitable is there?

Paceracing

729 posts

273 months

Wednesday 16th October 2002
quotequote all
It's quick, it's free, and it's easy. I assume you have the 2.9 V6.
1. Duct cold air to the air filter. (As much as you can. It should be good for a few bhp and made a difference to mine).
2. Prise the black plastic tops off both air flow meters and relax the springs by a couple of notches on the round spigot thingys. (This allows the the AFM vane to open easier and tells the ECU to fire the injectors earlier and therefore for slightly longer which will get more fuel into the engine).
3. Use Optimax.

Jas.

funbobby

Original Poster:

1,636 posts

265 months

Wednesday 16th October 2002
quotequote all
griffith is next step -hopefully!! not just yet though still think s series is great lookin car. just had new airflows on car would they need adjusting? sorry not that mechanically minded

John Mac

386 posts

270 months

Thursday 17th October 2002
quotequote all
PACERACING said : Duct cold air to the air filter.

I think I've achieved this by accident and it may work!
To get better access to work under the bonnet I ran the front wheels up on to a 2" high plank, this enabled the bonnet to move well forward but at the same time it must have pulled off the 2" (ish)flexible air tube to the passenger side of the car, this has left a very nice 2" fresh air plenum inlet box from low level that is almost opposite the air filter. The original pipe I have simply strapped adjacent to where it should be. Does this sound sensible or should I put it back together again?

dern

14,055 posts

286 months

Thursday 17th October 2002
quotequote all
My ducts were not stuck to the bonnet when I got the car and I only fibreglassed them back in a month ago. The results is no difference in power but plenty of fresh air ventilation - ah bliss

Mark

SIMON67

315 posts

265 months

Thursday 17th October 2002
quotequote all
"Prise the black plastic tops off both air flow meters and relax the springs by a couple of notches on the round spigot thingys."

I've got them both in bits on my desk & I cant see where to release the spring - any tips?

Cheers

Paceracing

729 posts

273 months

Thursday 17th October 2002
quotequote all
John Mac,
Sounds okay as it is to me.

SIMON67,
I'm going from memory here, as I did the airflow meters on my car a couple of years ago and it's a bit vague now but i'll give it a go anyhow:-
Under the black plastic tops there is a black round disc with letters beside little slots all around the disc. In the centre I think there is a coil spring with one end clipped into one of the slots on the lettered disc. Using pliers, gently remove the end of the spring from the slot in the disc and put it back in another slot where there is less tension on the spring, (i.e back the spring tension off 5 or 6 slots or until you can feel that there is still enough tension in the spring to operate the vane).
As I have said, my memory is vague but hopefully some of this makes sense with what you see in front of you.

Jas.

SIMON67

315 posts

265 months

Thursday 17th October 2002
quotequote all
Paceracing

I have backed them both back to the point where they close fully when inverted i.e. there is the weight of the vanes trying to open them. This has given me a datum point so that I can achieve some kind of ballance. I guess that I will have to make some adjustments once I have tried a drive tomorrow.

Cheers