Firstly, this is about high performance VW engines.
I recall someone saying or reading once that air cooled VW engines should be run slightly richer than other engines. From memory I think it was to aid slightly for heat issues in our engines, but I don't know.
So is there any truth to this and if you know either way for sure, please let me know.
Cheers, Kev
HappyDaze ·
Kev, the main thing is the engine must not run too hot. If the temperature can be kept at a safe level, without dropping a lot of power, then err on the safe side and run a bit rich.
Do you have an air/fuel gauge fitted ?
vw54 ·
slightly richer is good as per above to make it run cooler
Camo ·
Thanks guys. I may be getting it dyno tuned this week with a guy that knows and uses my brand ECU (Megasuirt) but not sure if he knows about air cooled vw's 🙄
Thought if I knew for sure I could say tune it and then add 2-3% across all tables, just as an example ❓
Greg - Laptop displays the ratio, but not sure if it is accurate until dyno and he sticks thing up exhaust pipe to compare.
Dave - Water injection will also cool it 😉 And this may be a future mod 👍
Cheers, Kev
HappyDaze ·
Dyno AFR reading should be OK, but keep an eye on temps. Do you have a cylinder head temp. gauge ?
At 6000 RPM in 4th at Wakefield Park, No.8 Beetle showed 12.4 : 1 AFR on the gauge, and 350F on the CHT gauge, for what it's worth.
You need a big spark to run rich...hope yours is big enough ! I'm talking about spark, you fools. 😁
vw54 ·
Water Injection tooooooo FKIN complicated
Use the KISS method for all things VW
Get a sensor up its bum and check the ratio pretty simple and cheaper than a dyno tune by a guy that DOES NOT no VWs
U will be 12 out of pocket
hellbugged ·
Kev
Please talk to lee Harris first
His turbo injected beetle has been running sweet for years.