Hi, i'm running everything stock at the moment, with a Exedy Hyper Single clutch.

The car feels full of power when cold and warm,

but once its properly heated up, it feels very powerless in low revs.

Its ok after around 3000rpm,

but just when i'm taking off in 1st, it doesn't really want to go.

I checked my aftercooler and there's water in there. although warm.

and everything seems to be fine.

I've recently changed over to BKR7E which came pregapped at 0.034"

Am i using the wrong spark plug ?

What may be the reason for power loss in low revs????

 

checked your belt?

do you have a boost gauge?

 

I havent checked the belt since I've installed the kit.

Maybe it might not be tight enough??

I haven;t got a boost gauge to check the boost either...

 

To me, it sounds like the ecu is pulling tons of timing when you're warmed up. Can you try a different plug?

 

Which plug do you recommend???

 

Bingo. The belt stretches at first and needs to be tightened after 100 miles or so. Tighten the belt and let us know if this helps.

Helpful hint. Don't believe "pre-gapped." Always gap your plugs to confirm the original setting and modify if needed.

 

But he said that the car feels 'powerless' at low revs when the car is hot. Why would he achieve full power at high revs and have a gutless car at low revs with a belt that's too loose?

 

[QUOTE=CourageOO7,Feb 21 2008, 11:00 AM] But he said that the car feels 'powerless' at low revs when the car is hot.

 

If this was a gear problem would you insist on fixing the flat tire first?

If you run the pump it takes power down low and with the belt loose it doesn't add any power back.

Fix this then see if there is still a problem.....heat soak, plugs or whatever.

 

Mine behaved similarly after I had just installed it. The belt got looser. After tightening belt, I got my power back.