Q boost controller?

[jerrad]

i was wondering if i should get the single or double ball bearing and whats the difference. also i have a stock turbo and am planning on upgrading to a pt 51 so would i have to get a different controller or are they all the same? thanks jerrad

 

[madhat]

Go on a head and get te dual, like I did...basically the diff is that the single is more likely to mess up in transport is what I was told by a rep...I have a pt51 and a 2800 converter....I went from 2# @ 2400rpms (e-brake or not) to 5# w/o ebrake before I brake loose and I can get like 15# before my tires brake loose w/ ebrake @ atleast 2800rpms! (w/ 235s out back) It is great!