evo III turbo

[sharky559]

okay so i just put in a evo III turbo. problem is that it spools very slow. spool starts going around 4500-5000 rpm. on the t25 spool started around 3000-3500. whats going on

 

[tin_tin13]

You have an aftermarket boost gauge? Have you checked for boost leaks? Pre exhaust leak? Is it a fake eBay turbo, used? Any shaft play?

My brother had an evo3 turbo on his gst which hit full boost in the 3500-3700 range if I recall.

 

[grothe3297venge]

^^^^^ goddddd I'm always to slow

Have you started by looking for a boost leaks and checking for possible shaft play? Also you may want to post a log of your tune, could possibly be the issue.

 

[Devilsfutbol17]

Did you check for boost leaks? Make sure your wastegate flapper isnt open and that you have no exhaust leaks pre-turbo.

My girls gst t25 starts spooling much sooner than that. On my evo 3, I saw 20psi at 3300 rpms FWIW

 

[sharky559]

boost gauge yes. leaks no. fake evo yes.

 

[Operate]

One time I removed my intake to work on something and when I reinstalled it the rubber sleeve that goes over the compressor inlet slide off and was inside the intake! I didnt notice it when I installed it. I drove the car and the turbo would not spool! I messed with my MBC and eventually removed the intake to see that the rubber sleeve was inside the compressor inlet and the shaft put a hole in it! Thankfully it didnt eat it, I reinstalled it and everything was fine.

Wonder if you're intake is restricted? What are you using to control boost? maybe disconnect the MBC/EBC and run the vacuum line from the wastegate to whatever manifold pressure source you are using to see if that changes anything ?

 

[tin_tin13]

Could be the turbo itself, if it were me I would remove it all and reinstall it make sure everything is correct.

Could you post a pic of your setup? Just curious.

 

[josh408]

If you have a front mount then that seems about right. The spool time won't match up to the t-25 since the Evo 3 is a bigger turbo it takes a bit longer to reach full boost. Do you have a front mount?

 

[Cdc1221]

Fmic or no, 3000 rpms should put that turbo at 20 psi. I can build that much boost on a stock stall, no antilag. Something is way off. Either engine comp is low, or there is a horrible leak. Or just something wrong with your cheapbay turbo, go figure

 

[TopGun8818]

Throw that ebay turbo in the garbage and put the t-25 back on. You are jeopardizing your motor running with that crappy turbo as it is possible for it to go out and fling metal bits into your motor.

 

[sharky559]

well yea im doing wrong by putting a fake turbo on. but my brother had it on his gst and worked good . im only putting that turbo on it because the stock one blow out and i needed something quick(daily driver).

 

[99ECLIPSEGSXDSM]

Easy way to check for exhaust leaks is to use seafoam! That's how I check for preturbo leaks

 

[LarryJoe]

Make sure you got all your turbo to manifold bolts tight. If you didn't that would cause your slow spool for sure.