Got md321t and have an issue with motorway in gear acceleration with high boost at low rpm.
This causes an annoying judder through the engine/turbo.
Can anyone explain this and offer some sort of solution.
cheer's

 

Mods?? Mapping?? What boost at what rpm? What car?

 

compressor surge ?

 

Yeah, sounds like compressor surge.

 

i did think this may be generic problem associated with any turbo application, but here is my spec:-

04 sti

ceramic coated md321t
3" miltek with sports cat
650 flow matched injectors
reversed inlet manifold/hyperflow front mount
gt spec ceramic coated headers
prf7 plugs
walpro 255lph fuel pump.
tial dump valve
ecutek re-map

main problem is in gear increase in speed at motorway speeds (5th/6th) at 1.4 bar. i don't want the only solution to be change down a gear.

I understand it may be compressor surge, thought someone may have a solution or be able to explain what is going on to cause it.

 

http://tinyurl.com/7q8wlx2

 

 

 

with all due respect is this not a technical forum for asking questions such as this?

 

Mine doesn't suffer from compressor surge at all. Much much better than the VF35 I had before.

Who mapped the car ??

 

This is a general technical question!!
If it bother's you don't read it.

Thanks for ya help!
Jobsworth!!

 

What Induction is running also ??

 

I think he was more having a dig at peoples replies, not you

 

If thats the case then sorry, it could read both ways.

Cheer's

 

Inner wheel arch hyperflow induction kit .