I am wanting to do a pulley reduction but I dont want to spend the money getting a new intercooler as they are very expensive.
Will be my daily driver.
Im thinking ill just go for a 15% or should i just jump and get a 17. im assuming the 19% will produce to much heat or am i thinking about this all wrong.
If you're not going to get a new intercooler I would go for the 15% some people use a 17% with no problems but you could get heat soak I would also use a high octane fuel such as shell nitro +
Ive toyed with fitting a new cooler, but cant see the benefit for the money TBH, any aftermarket one will be roughly the same size and not much more efficient.
You wont be getting the full benefit of your 17% pulley with a standard intercooler as your intake temperatures will be high, the aftermarket intercoolers are quite a bit bigger & much more efficient
15% with no ic or you will trash your engine as the IAT's and OAT'S go up you will end up with detonation.
When you do your pulley you also need to go up a heat range on your spark plugs.
ok awesome thanks guys. It sounds like i for sure should go for a 15%. As i really dont want to upgrade the ic.
I have read some people have been putting bigger hood scoops to capture more air but would that really make a huge difference or no ? it does look nice cosmetic wise but that might be the only advantage.
also @heathwebbo I currently use nothing less than 91 sometimes 92 just depends on the fuel station.
If your going to run a pulley or any mods heat management is important, so any extra cooling air you can get in to the engine bay is good.
Also Any extra cold Air you can push though the ic through the scoop is good to.
With the pulley and plugs I would run the highest octane fuel available at the petrol station or you will melt your engine from it running lean. Or be very close to it you only need a slight hick up and your into melt down.
I know you don't want to change the ic but personal I would advise it. If it's the cost there are some good secondhand ones around.
You could if you wanted run a water meth injection system this will help you keep the air temps down. You could run a water meth system but only run water no meth
If you want to be safe buy an 11% pulley a good airbox and plugs it will most probably work as well if not better in high temps than a 15%
Mine is an 06 so should have the same charger as the JCW. Its having it's Miltek fitted tomorrow and a dyno run.
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