Pc3 map question
Road Warrior
Joined: Apr 2010
Posts: 1,648
Likes: 37
From: Monroe, Louisiana
Mpg
That is the cruise range and it is removing 3% of the fuel that the stock map had in it which will help your MPG. Most maps I have looked at do this from the 2000 to 3000 which is a better cruise area. If MPG is ok and you are not getting any surging in this area I would leave it alone. As far as performance you are out of the 10% to 30% throttle anyway so it shouldn't be affecting it. It may help your off idle response and easy take off from stop to richen up the 1500 to 2000 area by changing the -3 to +5. If it doesn't work you can always go back.
You didn't say if this was fuel tables or timing table. If it is timing table don't make the changes I posted above as it will start pinging probably.
You didn't say if this was fuel tables or timing table. If it is timing table don't make the changes I posted above as it will start pinging probably.
Last edited by ke5rbd; May 9, 2011 at 11:43 PM. Reason: Making sure not timing table
Elite HDF Member
Joined: Nov 2010
Posts: 3,846
Likes: 173
From: Simi Valley, CA
It does sound like the OP is looking at the TIMING tables... I have never seen a map with the same FUEL values in a series of fields as described, but that is common for ignition timing.
Generally speaking, the more ignition advance you can run, the better the performance will be.
Try zeroing those -3's and see if it pings. If not, you can even start bumping it farther with some 1's or 2's until it does start to ping, then back it off a degree or two. If it does ping after zeroing the -3's, simply plug them back in.
Generally speaking, the more ignition advance you can run, the better the performance will be.
Try zeroing those -3's and see if it pings. If not, you can even start bumping it farther with some 1's or 2's until it does start to ping, then back it off a degree or two. If it does ping after zeroing the -3's, simply plug them back in.
Seasoned HDF Member
Joined: Oct 2006
Posts: 5,977
Likes: 85
From: Nevada
I agree with the above. If you are looking at the fuel tables I think they are too low.
I have changed my values in those areas to nearly 0 and the motor will get a bit too hot when the weather heats up. Most of the time I get away with it with an oil cooler and synthetic oil.
I have changed my values in those areas to nearly 0 and the motor will get a bit too hot when the weather heats up. Most of the time I get away with it with an oil cooler and synthetic oil.
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Road Master
Joined: Aug 2008
Posts: 1,181
Likes: 2
Sorry about the lack of info. Yes it the ignition table. The range is 5 - 60 throttle and 1250-3250 rpms is -3. From 100 throttle and 4500-6250 rpm is 4. Its a fuelmoto map. Just was wonderig how normal this is for that table. Just seems like I hear alot of people advancing that range not reducing it?
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Watch Guy
Ignition/Tuner/ECM/Fuel Injection
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Sep 3, 2010 03:34 AM
