Ebc + Varex

[Brenton]

An example of the benefits of an unrestricted exhaust system.....
Firstly my Legnum has 2 1/2" tuned length downpipes into a 3" system with a highflow cat and Varex muffler. After fixing leaks in the y pipe set up I decided to adjust the HDI EBC. With I went for a run with the Varex closed and settled on 13psi. Then I tried it with the Varex fully open, I was surprised at how much quicker it boosted and hit boost cut at 18psi on the same Ebc setting. Im now using both the high/low settings, one each for Varex open and closed.

 

[NuffNuff]

just for some extra info i had from my experience and obviously it isnt a boosted motor but a v8

but i had a full xforce set, long tube headers + twin 3" exhaust and 300ci cats on my 6L L98 (VE commodore) + every other bolt on

we dynod it with varex wide open at 295rwkw and closed was 245rwkw

 

[pretzil]

Should set up the varex to only open once you hit boost. Then you can have the lag that owners of other cars love so much.

 

[NuffNuff]

You mean like having Vtec? Heuheuheuheu

 

[pretzil]

Yes. Except with actual boost

 

[Dice]

With my Apexi ATS (active tail silencer) I get 1kW or less difference compared with the silencer taken out.

 

[naughtika]

With my Apexi ATS (active tail silencer) I get 1kW or less difference compared with the silencer taken out.

I have got that ATS as well, but didnt show any difference with or without it.. using it on my greddy Ti-C

noise/drone suppression is really good when its on though..

 

[NuffNuff]

My mate had one in each tip in his s2k after fitting a full apexi exhaust and headers. It sounded stock again, but without it sounded like an f1 car but the sound didn't match the speed it could do

 

[Brenton]

Quiet as stock from the rear when it's closed. Makes the shed rattle at idle when open, unfortunately this is not acceptable in residential areas but is a good substitute for a roo-shoo elsewhere O

 

[TME_Steve]

On wastegate boost, mine went from 155 open down to 105 or something with it closed, it's posted up on here somewhere but cbf looking it up