MicroSquit Conversion, Giving this a try |
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MicroSquit Conversion, Giving this a try |
Mblizzard |
Oct 3 2016, 07:18 AM
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#1
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Advanced Member Group: Members Posts: 3,033 Joined: 28-January 13 From: Knoxville Tn Member No.: 15,438 Region Association: South East States |
I am pretty happy with my stock FI. But after seeing some of the setups at Okteenerfest, I thought this might be worth trying.
The stock system is not easy to modify and get things running correctly. I spent a lot of time making minor adjustments by trial and error. While I am not looking for huge HP gains or anything, it is pretty clear that the mods I have could potentially benefit from a bit more precise control. Going to start with fuel only at this point to get things going and see where it leads me. Any help or suggestions for set up would be appreciated. |
jd74914 |
Oct 5 2016, 10:30 AM
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#2
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Its alive Group: Members Posts: 4,780 Joined: 16-February 04 From: CT Member No.: 1,659 Region Association: North East States |
Oops, just read your more recent post and saw that you want to use the coil for timing. Having increased resolution on the crank allows you better engine positioning accuracy so you can tune injection/ignition times better. Different applications, but generally better engine position accuracy results in a crisper tune.
With a T4 engine, the dizzy is driven right off of the motor so timing accuracy is very good compared to most engines. On engines with a belt/chain timing drive, there can be 2-5 degrees (or more) of error depending on engine speed, etc. |
Mark Henry |
Oct 5 2016, 12:48 PM
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#3
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that's what I do! Group: Members Posts: 20,065 Joined: 27-December 02 From: Port Hope, Ontario Member No.: 26 Region Association: Canada |
Oops, just read your more recent post and saw that you want to use the coil for timing. Having increased resolution on the crank allows you better engine positioning accuracy so you can tune injection/ignition times better. Different applications, but generally better engine position accuracy results in a crisper tune. With a T4 engine, the dizzy is driven right off of the motor so timing accuracy is very good compared to most engines. On engines with a belt/chain timing drive, there can be 2-5 degrees (or more) of error depending on engine speed, etc. Well debateable ...crankfire is still not as accurate as many believe, a 2-4 degree variance would still be the acceptable norm. As far as the dizzy drive goes it only becomes less accurate when you decelerate, and that doesn't really matter. The performance gain that most are seeing comes from the advance curve and higher voltages of modern coils. Same debate as far as sequential and batch fired injectors. The only real advantage of sequential fuel injection is an emissions and maybe slightly better MPG. And this is at lower RPM's, over say 4000 RPM most of this becomes a moot point. BTW I've been running EFI and crankfire since 2003. |
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