Injection Timing Assistance Requested

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Originally Posted by 07GTS

running WOT u want to be on a dyno or where u can see any gains as the more u delay the injection the less time the fuel has to start the atomization process so if u delay it enough (but not too much) u can use the delayed fuel atmo to get more timing into it sorta like a octane boost, u dont want to delay too much tho as u want all the fuel that goes in to burn up so its not hanging around for the next cycle causing more issues with self det

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Thanks :-)

Also, delaying EOIT too long can lead to the (poorly atomized) fuel washing oil off of the cylinder walls.

Who here has measured with a scope the EOIT on the injectors vs crank sensor signal?

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Originally Posted by yellz06

Who here has measured with a scope the EOIT on the injectors vs crank sensor signal?

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I don't know if this helps but they did something with Gen3 here
https://forum.hptuners.com/showthrea...l=1#post559828

I took it one step further and predicted some positions for later injection and valve events etc... but its just a guess work
https://forum.hptuners.com/showthrea...l=1#post683573

Injection timing, I log ipw and adjust up/down the ing timing until I get the lowest ipw. It's the dumbed down version vs intricate formulas I used to use. Works like a charm and very simple with a proper excel chart to know if you did good or bad on the last adjustment. I can see the changes in relation to power on the dyno and graphs smoothing out and taking proper form.

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Originally Posted by Camaro6

Injection timing, I log ipw and adjust up/down the ing timing until I get the lowest ipw. It's the dumbed down version vs intricate formulas I used to use. Works like a charm and very simple with a proper excel chart to know if you did good or bad on the last adjustment. I can see the changes in relation to power on the dyno and graphs smoothing out and taking proper form.

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This IS the simplest and best way to do it. Also how I set injection timing :) I still use my own personal known good curves, but THIS IS EXACTLY the best way to do it!!!