I am going to be installing my twins in the next month or so () and am wondering if I should go with a BHT3B with a 77mm Inducer wheel or stick with a 74mm wheel? I will have to pay an extra $250 to get the 77mm (will also include a polished compressor wheel cover) would it be worth it? I'm aiming for 600hp+ at the wheels on diesel only, would I NEED that extra 3mm's of inducer wheel? Thanks for helpin'!

 

the 74 will work, to get you in the 600 range.

 

I would use the B2 turbo instead of the 3B turbo. 3B are abit sluggish and the B2 will move slightly more air than a 3B.

 

Well I have thought of that as well BUT I already have an HT3B that I am using to mock-up the twinset, infact at the moment I'm warmin' up inside from being outside finishing the hotpipe . Plus I plan to make a few sets of piping for some people so having the extra turbo for mock-up will just make it a little easier I think. Do you not like your BHT3B in your setup?

 

No there nothing wrong just that I've heard that the B2 will spool faster than the 3B. I've also heard that its noiser than the 3B. I can pull around the 70psi range. My truck has the cam and head so the lag is so bad. A stock truck would more than likely different. I'm also at 3000ft, so its not helping my spool-up