Jump to content
SAU Community

Recommended Posts

Sorry to keep bothering everyone with the questions.........

I met a bloke the other day who used to to a lot of work on the early skylines/datsuns. He was saying that my 1984 MR30 skyline had probably gained ten or fifteen bhp as the previous owner replaced the exhaust meaning that the emmissions control system had been ditched which allowed for much smoother airflow because the car(in his words) 'isn't trying to eat it's own shit'

What do you guys reckon?

Link to comment
https://www.sau.com.au/forums/topic/295551-myth-or-fact/
Share on other sites

"eating own shit" refers to the EGR system, Exhaust Gas Recirculation

Which actually varies between different setups, but sometimes the engine can make MORE power with the EGR gear left on.

The exhaust does still contain some unburnt fuel/air mixture. enough for some turbo engines to NOT have the need for extra fuel enrichment on boost.

An interesting read:

http://www.autospeed.com/cms/A_110577/article.html

Link to comment
https://www.sau.com.au/forums/topic/295551-myth-or-fact/#findComment-4927115
Share on other sites

Also have a read up on HCCI http://en.wikipedia.org/wiki/Homogeneous_c...ession_ignition. As much as we generally 'hate' EGR, it is a fundamental part of the prototype HCCI engines being developed at present. And some of the things that they can do are pretty cool.

Link to comment
https://www.sau.com.au/forums/topic/295551-myth-or-fact/#findComment-4931180
Share on other sites

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


  • Latest Posts

    • Crazy how good the aero bar looks compared to the stock one
    • Yes, but you will need to rewire all the things that are different. CAS, coils, etc. Yes, but there is no IAT. What? You can use anything you like. It just has to be hooked up so that it will work.     Or are you wanting to just plug and play without having to do any thinking/work?
    • It's been a little over a decade since I bought the S15. As I did on my socials, I'll share some of my favorite pictures from over the years further below. If you haven't realised, pretty much all the pictures in my posts are ones I've taken.  In terms of updates, I don't have pictures, but I acquired a near-perfect pair of fog lights from a friend of mine, so those got swapped in for the pair I already had. As for the JZX110, I just got it back from being fixed. A few weeks back, I was on the highway when I suddenly drove over something with very little time to react. It was probably the size of a soccer ball, but it went under the car and banged into the underside pretty loudly. I pulled over and realized the fluid leaking was fuel, and of course, it was right near my exhaust. This required replacing the fuel tank. If you happen to be in the same predicament, thankfully this car shares a fuel tank with the JZS171, IS200, and IS300, so it wasn't too painful to replace. Enjoy some pictures as mentioned above, including the carnage from the fuel tank and a bonus picture I came across which shows how ridiculously shiny the Bugels are on the 110. So many more pictures I could share of the S15 but this will do for today, enjoy. 
    • Welcome.  Was the mistake the car, or joining us? 😏
    • Yeap, was me and the daughter getting coffee before heading to the new joint to measure up the fridge space and taking some pics that the solar installer wanted of the switch board
×
×
  • Create New...