We have done many twin turbo setups and quite a few procharger/turbo setups and you would be surprised how much work is put into twin turbos to get a final product. Large amounts of time tied up with getting wastegates set in turbo setups compared to a simple pulley swap to speed up or slow down a procharger.

A correctly match setup RPM matched with RPM to the blower and all the sudden you have a blower that redlines at the same time as the motor.

2000 cfm at 20-30 psi comopunded with a 80mm turbo now making 90 psi of boost and 45 psi of drive pressure and all the sudden you are wondering how to get more fuel into the motor.


Show me a compound turbo setup that had drive pressure that minimal and make a pass in the 1/8th at 106mph on fuel only

 

Sure sounds easy. Problem is now you have to properly match a turbine housing or waste gains with a " waste " gate. Even superchargers as compound options require more than just pulley changes. Surge ( depending again on turbo used ), dependent on cfm and pressure ratio, as well as choke are a major factor in centrifugal s/c. Just changing pulleys changes how a turbocharger will respond or quite frankly not respond.

 

LOL...

Show me a twin system that does not have a wastegate... I dont care what set up your running, your going to need a wastegate.

Why do people look at wastegates as a bad thing? There a tuning aid. The Procharger/38r or 4094r is going to be the new hot set up...

 

We use a waste gate due to compressor mapping. We want boost down low, or lower rpm, so we add a tighter exhaust housing. Now we want 4000rpm but our drive pressure is 100psi so we have to open the flood gate. All of the sudden we have half the lbs driving the same compressor and boom no weight to drive the turbine and now less driven compressor and it slows. No way is a properly setup system reliant on a waste gate. My supercharger is well over 2000cfm and I have yet to need a wastegate with my turbocharger, it being a gt42102r with a 1.44 housing.

 

LOL...

 

Interesting thoughts there...........

We are not seeing these reasons for your thoughts but hey like ya said each there own....

 

Right on Chad

No wastegates. We've spent hundreds on several different varieties and ultimately use them as paper weights.

Old picture with the 5000 since changed to the 42. Since changed again. And will again. Neither gated. Not thoughts, practiced.

 

Is this MIKE?

 

Yes

 

Now its all coming full circle I was wondering about that......

What happened to our ComRad Mick???? Heard some rumors hes out???? Caught the fire sale a little late would have grabbed those head units in a sec. You know who got there hands on it at all?