[Mk2] [Turbo] Does the CT20b suffer from boost creap

[garry goodall]

As above, looking at future modifications such as induction kits, and exhaust systems

thanks for your help

[Slarty]

In my experience, yes, it does. It's only once you've freed up the flow of the exhaust system that it becomes noticable though.

With a de-cat and a good free flowing exhaust, the wastegate can't flow enough exhaust gases away from the exhaust turbine in order to prevent it over speeding.

[garry goodall]

thanks for your reply, so is there a possiblity that these turbos can be ported?

[Slarty]

There are some companies who port the wastegate on their hybrid turbos (I don't know which ones off hand) but I've also seen reports of the wastegate then cracking after a time.

[Steve-O 2007]

you may need a restrictor ring to restrict the flow a little.

I had bad creep on the CT26 and no matter what I did I was hitting 1.36bar+

Sorted by fitting a TD05 with Tial External Wastegate, holds solid to what ever I set it to now

[Phill P]

Do you mind if I ask,is boost creep the same as spiking?

[jimGTS]

Do you mind if I ask,is boost creep the same as spiking?

no

creep is boost increases the higher the revs you go, (normally you cant control this)...... 5-10psi initial spool up, then more revs, 11, 12, 13psi
boost spike is if it were to spool and hit a higher than desired boost level then fall and maintain the boost you want (you can and should control this with an ebc).....5-15psi, 14, 12, 10, 10, 10psi

tho theres always a chance it can do both also, spike and then creep.

[Phill P]

Cheers