Hey Guys,

I have a 99 2.5RS and Under sudden/medium-to-heavy load, i get this whistling noise thats pretty loud and seems to be coming from the exhaust. But when i accelerate slowly theres no whistling. I have no ideas.

is it a vacuum hose?

i also just rebuilt my motor, its still on break in, and it has reground cams, no other engine mods.

thanks for any help
cheers
-Evan

The whistling is usually the axleback tip if you still have the stock one. Don't worry about it or change it to a nice aftermarket one.

What grind of cams did you take? How do you like them?

oh okay, sweet
i'm getting a stromung dual tip after wheels/body/paint
so i'll have to live with it for awhile but as long as its nothing, no worries

its called a "mild/fast road" grind, and it was done by a guy in BC that ken from Miles Imports uses. I can get the name if you'd like, but it is a little more expensive then delta cams. The guy said this grind can add 10-20% depending on other mods. Mine is stock so i'm guessing 10ish% so maybe 110-120whp. this summer i might be getting a baseline with them so we'll see what happens.

I havn't been able to test them out really, i'm still breaking in the motor, i re-ringed the block and i have another 175kms to go. from 2-3k rpm its normal as before, but then from 3-4k it starts picking up fast even with 60-80% throttle, not even WOT and then i shift up before 4k+ comes... lol i'm going to an autocross on the 30th (march) and the motor should be fore 1000kms, so i'll let you know then

cheers
-Evan

Cool, I have Delta 2000 grinds in my built engine in the basement.

Just wanted to see what you tought of them, let me know for sure after your auto-x.

Yvan