Quote:
Originally Posted by msmnick
That's not exactly an accurate statement. You can't reduce turbo lag by adjusting the wastegate, unless its malfunctioning or a poor design that creeps open at low psi, but it shouldn't. Some say a manual boost control can improve spool up, but if you understand whats going on there its not likely, unless again its not working right.
What does he do, just add a spring to keep the WG closed longer?
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Well, then, you'd better tell a gagillion Porsche 944 Turbo guys that what they've been doing for years was a figment of their imagination, and that their measured 3rd party acceleration and dyno test improvements were bogus. By manual or electronic control of the waste gate, higher boost is retained
at baseline than before, meaning less time to go from that higher pressure baseline to full boost, and/or full boost at higher pressure than before.
Stock, the Porsche 944 Turbo has ~212hp, but with simple modification it goes to 300 hp, and with further (more expensive and extensive) mod up to 500 hp.
Research Rennlist.com and follow the threads in the 944 Turbo section. hat car is, btw, aerodynamically pretty slippery in stock configuration.
As for my Baby Benz turbo friend, as I recall he jiggered the wastegate spring. He has also run that td or home heating and vegetable oil. No problems reported. He got that car for $200 because the fuel pump seals were shot, and uneconomic for the prior owner to replace. I seem to recall that Benz seals were failure prone, whereas VW seals were not. Dunno if bolt on of a VW pump is workable on that car, or not. Worth a look, though.