I have a turbo charged that runs on pump gas with 98 ron fuel and i am planning to mix the fuel with c16 fuel, from my knowledge pump gas has stoicmetric value of 14.7 and c16 is 14.77. Currently my engine runs on 1.4 boost and has igntion timing of 15 degrees, my question is how much timing could i increase if i put 50% c16 and 50% pump gas ...

2016年9月18日 · With Q16 I tend to target similar lambda numbers to C16 but you need to add additional fuel in order to achieve your target if you're coming from a C16 tune. You can't apply a single lambda target to every tuning task - You need to …

2015年9月25日 · A leaner mixture under boost will be quite safe using C16 - it's a pretty good fuel. Depending of course on actual boost pressure, I was aiming for around 12.0-12.2:1. You will also be able to advance the timing a fair way compared to what you could run on pump. C16 isn't totally impervious to knock though so you still need to tread carefully.

One big thing to consider is if there is a lambda (oxygen) sensor being used - C16 is a leaded fuel, as Andre mentioned, and that is going to contaminate the sensor. Estimates of how long it will take vary, and it may start giving a richer reading as it fails.

A big consideration with this setup is that you're using two fuels with vastly different stoich AFRs (14.7:1 and 6.4:1) so the stoich AFR of your overall fuel mixture is going to depend what proportion of the delivered fuel is methanol and C16.

Car is a Dodge Neon srt4 2.4 L with a fuel tech ft600 running spark pro 2 with factory coil pack, Siemens Deka 888 cc injectors at 43.5 psi fuel pressure on VP c16 fuel. Fuel pressure is rock solid. The issue occurs with or without idle control active.

2015年12月14日 · Brian, a good way to think about this is by chemical formula. A fuel with a given formula like gasoline (C8H18) will burn at a given stoichiometric ratio, no matter the octane rating because the chemical formula does not change based on octane rating. When the chemical composition changes, so will the stoichiometric ratio for combustion.

Ive noticed a lot of the VAG direct injected cars running only unleaded race fuel like VP’s MS109 or Sunoco 260 GT plus. I’ve also know people use ethanol blends like E50-E70. Any reason why leaded race fuel like a C16/Roo16 not used? My only guess is that it’s likely the injectors don’t like the chemicals in the leaded race fuel?

I normally tune in the range of 0.82 on C16/Q16 which is still what I'd consider to be quite safe. You're right that pure methanol does typically get tuned at a richer lambda target (the likes of pro mod engines are actually in the vicinity of 0.55), however what you do with the lambda target will depend on the volume of methanol relative to C16.

That car ran an AW11 4AGZE bottom end with a silver top 20V head and TRD head gasket. It had a GT30 HKS turbo, Motec M48 ECU, Quartermaster twin plate clutch and W57 box. We made 501 whp @ 32 psi on C16 fuel and it ran a best of a 10.51 @ 134 mph.