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Login now! You are using an out of date browser. It may not display this or other websites correctly. You should upgrade or use an alternative browser. Thread starter hallperson Start date Aug 30, It depends. But, if your turbo spools up really loud, it usually indicates that you have a boost leak and the turbo is working alot harder to pressurize your system.
You will wear out turbos really quick if you have a leak. Also, a hard intake pipe and a free flowing air filter not the stock air box will also help you hear the spool up alot better. But, how you make it sound, it seems to be spooling pretty loud and you might consider doing a boost leak test. I used to have an Evo III 16g turbo before and at the same boost levels it is alot louder than my 20g.
I know 14b's and t25's are alot louder unless you are at lower boost. I wasn't refering to exhaust leaks but, on the intake side. You want to check up to 20 psi and try not to go any higher otherwise you may blow some seals on the throttle body or blow a hose. I accidentally did that before and blew a bunch of hoses. You can hear your turbo working not only 'through' the intake side but the exhaust as well. In that case of course you will hear the turbine.
I remember when I put a 3" exhaust from my totalled Laser onto the current one which was at the time completely stock, I started to hear that 14b pretty much all the time.
It dumps in front of the right rear wheel and I always have windows rolled down a bit so that helps things too. MHI turbos may be noisier than Garretts in this respect. My take. I'm in the process of switching to a 14b. People ask me all the time if my T is an upgraded turbo because of how loud it is.
I have zero boost leaks, cause its my favorite thing to do every Saturday morning, pretty much. But why is it so loud in a good way and menacing? I figure the relatively small size has a lot to do with pitch and tone, but my thoughts are that the reason identical turbos might differ in "sound output" is because of minute differences in the machined tolerances.
But as a definitive answer? I have no clue. Louis, Missouri. Viewed times. Improve this question. Add a comment. Active Oldest Votes. Improve this answer. Jeff A Jeff A 79 7 7 bronze badges. Sign up or log in Sign up using Google. Sign up using Facebook. Sign up using Email and Password. Post as a guest Name. Email Required, but never shown.
Featured on Meta. Age has no effect on spool sound. Only if turbos are shot and have major shaft play will you hear an increased "whine" If your hearing excessive spool noise or more than what your used to you might have a small boost leak. Not enough to cause boost problems but enough to leak and make whistle. Originally Posted by atomos Brigadier General. Originally Posted by imageautodetail.
I get that siren sound also along with the regular swoosh sound. It does it mostly when car is cold. I've noticed it lately. Car is running fine. I hear a faint high pitch spool sound in those low rpms.
Didn't when stock but a high flow filter and more boost does that. I think your fine. Originally Posted by King mode. Originally Posted by Gugs. Originally Posted by Chrisred.
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