Engine/Transmission (1998.5 - 2002) Magic Turnbuckle?

[RowJ]

Been running EZ w/o turnbuckle for 4 weeks. Just installed turnbuckle and 2 things happened that suprised me.

(Background Info-No trouble pulling 22 psi w/o turnbuckle so Wastegate appears to have been function nornally. Now get 32-35 psi)



First suprise=EGT's, at shutdown, cools down faster and bottoms out 25 degrees lower since installing turnbuckle??



Second suprise=Mileage up about 1 mpg from before turnbuckle.



Make any sense? All I can think of is Wastegate opens partially before reaching 20-22 psi Boost. Maybe starts to open well before?

Any Ideas or similar observations?

 

[RowJ]

Wastegate question?

Since nobody is responding, let me rephase the question.

Is no wastegate more efficient than turbo with a wastegate?(assuming, of course, you do not overboost).

 

[Dr.Kayak]

I have been running the EZ with turnbuckle for 2 years. Can't say I have seen similar cool down side effects that you describe.



I think the extra MPG makes sense. The EZ adds more fuel. The extra boost adds more air. So with both you are back to a more ideal fuel/air ratio.



Can't see why anyone would run their EZ without the extra boost.