Jump to content
SAU Community

Recommended Posts

Hey guys,

Apologies if this question is stupid, but i have a awkward scenario where google wont be much help.

So today i remembered im still running the stock cat on my evo. I had a full 3inch exhaust system which i installed 2 years ago however it came with a test pipe as oppose to a high flow, so i left the factory cat on to keep the car legal. As time progressed i focused on other mods and i totally forgot about the exhaust till today.

Recently I got my car tuned on e85 - stock turbo @1.6 bar & stock motor and made 242awkw/460nm.

I was wondering whether it will still be worth getting a high flow cat post tune, or whether the results will be negligible...

Cheers

Link to comment
https://www.sau.com.au/forums/topic/464936-high-flow-cat-vs-stock/
Share on other sites

Yea i thought so. 20kW is a good bit of power given the cost of a cat. Ill visit an exhaust shop and get them to weld one on. I also just realised my stock cat is 2.5inch, might be causing some turbulence as well, kind of wish i remembered sooner.

Cheers mate.

If your tuner has been wise enough to interpolate the cells around the loaded parts of the map then you'll be fine.. especially on a car that runs an AFM :)

A quick squirt on the dyno would be a great way to check.

  • Like 1

Hey guys,

Just an update. I got the cat swapped out with a 100 Cell high flow and its a good thing i did!

My old cat absolutely crapped itself, there was debris blocking 50-70% of the cat. Even a brand new stock replacement would of seen some gains! Unfortunately i didnt get to take a picture of it in time as it made its way to the bin.

I drove the car and i definitely need a retune. The car is hitting 1.6 bar of boost in 2nd under 75% throttle (i thought full boost is usually seen in 3rd gear?), where as before it tapers off @0.9 ~1.1 bar in 2nd. I was scared to full throttle as i dont have a Wideband.

Its not as loud as i thought it would be, just a bit raspier.

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

    • Hey all, I'm sorry if this has been discussed before.  I have a 2008 Japanese import V36 coupe with nav but without Bose. I bought one of those AliExpress android screens, which for the most part works really well.  The only thing that doesn't work is the air con controls (well sort of) and the factory reverse camera.  The AC can be controlled fine but it doesn't report the change in temp and mode to the screen, and the volume knob/other audio controls from the panel don't register on the learning app.  I am pretty certain that the problem is the difference in the head unit between base model (Nav but no Bose) 2007-2009 coupes and anything after 2009.  Mine is the one with the blue connector all the way to the right as seen in this forum post:  The reason I think this is there is one wire left over that doesn't fit anywhere on this head unit, or in the factory screen which also uses different connectors to more recent versions.  I've seen the upgrade from OWC, and have sent the guy a message on eBay but no response yet.  I also don't particularly need the whole kit, just *maybe* an adapter for this one cable.  Did anyone else here have the same problem, or have any insight about what I can do to get this working?  I have been in contact with the seller but all they seem to be able to do is ask for more pictures and videos. Minor edit to add:  I have been researching and found a screen on Aliexpress that actually specifies my head unit in the listing, so these things do exist.  I will contact the seller to see if the wiring adapters are interchangeable with other screens.   Thanks in advance!
    • Can't go wrong with tourings/estates/wagons. 
    • Oh poop ! I missed the "deposit" in your post ! 
    • I laughed so hard a snot bubble popped out my nose !  And seriously ! You can still buy a decent house in Western Sydney for 2 mill ? ? 
    • Come on guys, they're just trying to sell their project car to scrape together a house deposit in the Western Suburbs of Sydney...
×
×
  • Create New...