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Wastegate spring vs. EBC

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Old Feb 13, 2009 | 06:38 AM
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Default Wastegate spring vs. EBC

I was planning to upgrade to a HKS EVC along with my retune, but due to the economy and repairs I have to do, I'm going to scale it back because I don't find it necessary and I have this Altantic City addiction now.

I am going to use a new wastegate spring @ .6bar (8.7ish PSI) and have a tune for that boost alone. Are there any safety/performance downsides to the EVC besides overboost control and a a tiny bit more boost response from an EBC?
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Old Feb 13, 2009 | 10:11 AM
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You will be fine with just upgrading the spring, just won't be able to adjust boost on the fly obviously.

Other than that, you will be ok.

-George
GT Motorsports
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Old Feb 13, 2009 | 10:13 AM
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That's exactly what I am running. 8.5 psi springs and the EVC 6. I've been having problems with the bc lately and my be getting ride of it when I upgrade to the Haltec next month.
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Old Feb 13, 2009 | 10:35 AM
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Thanks George

I don't think it would do me much good to have controllable boost anyways. When the car is driven, I want max performance out of it. Knocking it down to 6 psi or whatever serves no purpose soo.... .6 bar here I come.

George, have you personally seen much motor life expectancy difference between people running 6psi and people running 9 psi? The general consensus from all of my research seems to be that as long as the 9psi is tuned correctly, there shouldn't be any problems.
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Old Feb 13, 2009 | 01:47 PM
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Well the more power you make, the less reliable the car is, so it would be safe to assume that your car is less likely to snap a rod at 6PSI than 9PSI.

That doesn't mean it won't last though. There is just no one who can answer that question, you will just have to take the chance and see what happens.

Less power = increased reliability, just take that for what its worth and you will have to decide what you want to do.

Also what really matters is the power output, not the boost pressure. The power output is the stress the engine is seeing.

400rwhp at 6PSI or 400rwhp at 12PSI same thing as far as the engine is concerned, one car might have a big turbo, while another might have tiny snails.

Hope that helps.

-George
GT Motorsports
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Old Feb 13, 2009 | 02:33 PM
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Originally Posted by George@GTM
Well the more power you make, the less reliable the car is, so it would be safe to assume that your car is less likely to snap a rod at 6PSI than 9PSI.

That doesn't mean it won't last though. There is just no one who can answer that question, you will just have to take the chance and see what happens.

Less power = increased reliability, just take that for what its worth and you will have to decide what you want to do.

Also what really matters is the power output, not the boost pressure. The power output is the stress the engine is seeing.

400rwhp at 6PSI or 400rwhp at 12PSI same thing as far as the engine is concerned, one car might have a big turbo, while another might have tiny snails.

Hope that helps.

-George
GT Motorsports
Good to know, I'm at 10psi with my 3.12 pulley and was really concerned with going to the 2.87 because the boost would be like 12+psi. I'll still be well below 400 whp though.
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