Jump to content
SAU Community

Recommended Posts

Saw a guy with a varex dosing down the road into the servo. Sounded awesome fully opened. I complimented his car and he said it was a 3.5 inch inlet into a 5 inch cannon. He closed it and it was dead quiet...probably less than stock. He said he pulled 320 on the dyno and had cams. I might look at this option shortly.

Just had a quick look at the Varex and it's 3.5" OD, which is not too bad, taking a stab the the wall thickness of the pipe would be 2mm or less, you're left with approximately 85mm or approx 3.3" ID which is still some difference from the

run of the mill 3" exhausts. Would be great for temporarily deterring the wrong kind of attention!

Just had a quick look at the Varex and it's 3.5" OD, which is not too bad, taking a stab the the wall thickness of the pipe would be 2mm or less, you're left with approximately 85mm or approx 3.3" ID which is still some difference from the

run of the mill 3" exhausts. Would be great for temporarily deterring the wrong kind of attention!

Spoke to a few varex exhaust installers and they recommended not going down that path. They said the 3.5 inch canon had inherent issues when closed. They said when fully closed when cruising or in peak hour traffic, they became very hot because the gases were diverted through the muffler 3 times before the were expelled and they recommended that you would have to continually open and close the valve to help it cool down. This heat issue was causing overheating and failure of the valve motor. The larger oval type muffler did not have this problem. So I suppose it best to stay away.

I finally found the courage to comp test this engine. Turns out it's not TOO bad but definitely could be better.

155, 155, 160, 153, 153, 148.

No 6 gets me a little worried, might ask Trent to keep that cylinder nice n rich when it gets tuned.

Is that a huge issue? I thought it was only if it was around 10% out or so.

Mine came back as 155,150,160,150,155,155

Not a huge issue, 148 is getting pretty close to 10% though. Even so, as long as I take care driving it until I have money to get it tuned, should pose no problems.

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now



  • Similar Content

  • Latest Posts

    • Hi. Sry iam not a mechanic and iam not at the car atm so i dont know 100% but they told they measure those and even try to change those. AFM they have two. Coils are new a they have my old one too. Plugs too. ECU...we have 25 NEO stock and Nistune 25 NEO.   But i dont know if any one those could be the problem and why/if/what can cause this, Only thing they did not check is fuel...but that walbro 255 is new(like 1,5 years)... That fuel pressure gauge idk...but i let them know Any suggestions?   EDIT: how can they know if it is like you say he ECU pull power when it reaches a specific boost level that is too high? Tha car has boost controler
    • Can you clarify what you mean by boost cut, do you mean it misfires both when under load (driving) and when stationary and out of gear? Or does the ECU pull power when it reaches a specific boost level that is too high (boost control issue)? Does it occur at idle with no throttle? When you say "the ECU is OK", what ECU is it and why do you think it is OK? Have you used the NEO ECU, and if so do you have a MAP sensor attached? Same for the AFM, why do you think it is OK? Do you have any way to put a fuel pressure gauge on it (even just a mechanical one between the fuel filter and fuel rail)?
    • Hi.. Just another problem. So maybe you can help. I(my mechanic) done swap from my RB20DE NEO to RB25DET NEO. Everything is OK but we have a boost cut. Coils/Plugs are ok...AFM is ok. ECU is ok. I have Walbro 255 but it "changed" sound few months ago(you can hear it ouside) you did not hear that when it was new(maybe faulty?) Sooo...what now? What can cause this boost cut? It is even when you standing still...
×
×
  • Create New...