What standalone ecu do u recomend?!?!

[hanzbrady]

Originally Posted by Kingtal0n

15k is nothing. try 200k, 250k. You can get 250k out of a JDM BB OEM turbocharger- but only if you keep the proper bypass on it, and use a good air filter, and always have clean oil, and never over spin it. Its all of these things; not just 2 of them.

The best reason NOT to run a bypass/bov is for simplicity, when you have a car that absolutely needs the minimum (simplest) setup to win a race for $$$, so that there is less to fail/leak/go wrong. Like If I was going to race for pinks, blast the engine with nitrous/every trick in the book. Or a true race car, competition only, where you have 'unlimited' turbochargers, engines, and funding. Not having the bypass might mean lower wheel speed and more turbo wear, but if it guarantees that the shit isn't going to pop off, fail/lock open, or otherwise cause you to lose the race... its worth the additional drawbacks of having to change parts more often. BYpass/bov are best served in RELIABLE applications, mostly daily drivers, people who need to get 200k+ out of their setups.



If the goal is protect the turbo, then you want the bypass as close as you can get to the compressor wheel. Some turbos now come with them integrated to the compressor housing.
The fewer quantity of air molecules between the wheel and the bypass the faster a similar diameter hole will be able to evacuate the plumbing and reduce pressure.

Imagine a length of pipe extending from the compressor wheel outlet to infinity. Where would you plumb the bypass in this situation? At the far end, near infinity? The pressure would never drop in the pipe by the compressor wheel if you did that. On the other hand, If you place the bypass exactly near the compressor wheel, the pressure could stay elevated in the pipe at the length of infinity, while the local pressure by the wheel could be managed through the bypass, assuming the air does not flow backwards in the pipe (applicable to engines since they never breath backwards, there will always be some number of air molecules M traveling towards the engine even at idle speeds)

Just a quick note, both of our shop's drag cars are >1000whp and both feature a blow off valve, as do Dave Briggs' and Kelsey Rowlings' drift cars.

[Kingtal0n]

Originally Posted by hanzbrady

Just a quick note, both of our shop's drag cars are >1000whp and both feature a blow off valve, as do Dave Briggs' and Kelsey Rowlings' drift cars.

They obviously care about their equipment, good job that. Always protect it if you can. I would never personally run a car without protection, its like going without a condom.
You might get lucky but....