chrisg26

Hey guys, I just installed my kit last night. The only problem I have is that the turbo seems to be extremely LOUD. I think that it's the internal wastegate stuck open, but I'm not sure. Let me know what you guys think.

Olegator

Don't worry, if everything works properly then you are fine. The car gets a lot louder after the install. Plus the exhaust gets quieter, so you hear other stuff better.

JoeyBalls

if the wastgate was left open, you would never build boost

chrisg26

Sorry, I should probably be more detailed in my description. There seems to be a bit of a clicking noise, so I'm also thinking that the turbo might need to be rebuilt. I'm just not sure because the car seems to pull.

SgtB

The clicking may be detonation.

chrisg26

Did some research on detonation. The only things that I could see causing me to have detonation are: a need for colder plugs or my car is running really lean.

JoeyBalls

whatever it is DO NOT BOOST until you figure it out. do you have an AFR Guage. I had clicking in VTEC in the summer for a while, as soon as I added my Meth injection it stopped, so I believe I was detonating. My AFR's where in check my timing may have been too advanced. If it is the stock Greddy Base map there is very little chance you are detonating because of the tune, more so some other fuel delivery related problem, get an AFR gauge

devs2k

is the clicking only on decel i.e foot off the gas?

Revenge

If it was the standard greddy map it is problably OK, if it was a map you got from another member it may be set up for there car and not yours so be careful.

urBan_dK

I just wanted to clear up some terminology that seems to be confused in this topic: boost creep versus boost spike.

A boost spike is when your boost overshoots immediately and corrects itself relatively quickly back to the desired boost level. This is not too dangerous as long as the spike isn't too big, as long as AFRs stay in check. It is due to the wastegate not opening quickly enough. This is either caused by too strong of a wastegate spring, too much actuator preload, or a poorly configured or just plain bad boost controller.

Boost creep is a bigger problem. The problem grows when it's cold out, and is due to the wastegate on the turbo being physically unable to vent enough exhaust gas. This can be extremely dangerous as the "creep" grows as the RPM grows (more exhaust flow). Higher boost pressures at high RPMs are much more dangerous. Fixes are either to port the wastegate to flow more or switch to an external wastegate. People that suggest switching to a more restrictive exhaust are essentially crippling a poorly designed system, by limiting flow artificially.

I hope this clears up any confusion. I initially was confused between the two terms as well.