Power FC Power FC Tip-in question
#1
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Power FC Tip-in question
I can't figure out the off idle stumble. I tried everything I could think of and I can make it worse but not better. Until just for grins I turned up the water temp 80 degree to 135. Now it runs fine but the A\F is a little rich. Does anybody know exactly what this does? I assume it enrichens the mixture but all over or just light load or what?
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Whats your setup?
Before you even attempt to adjust Thottle tip in settings or any related you need to sort out and make sure you've properly setup your TPS, throttle body, make sure you have no Vac leaks, basically all sensors and components are functioing correctly otherwise you'll just be chasing your own tail around and around and around....
Then and only then, you can move onto adjusting throttle tip in and tweaking your tune...Look up a thread entitled "Success with settings 2 Inj vs Accel TPS1" very informative and will give you a starting point and guidance.
Before you even attempt to adjust Thottle tip in settings or any related you need to sort out and make sure you've properly setup your TPS, throttle body, make sure you have no Vac leaks, basically all sensors and components are functioing correctly otherwise you'll just be chasing your own tail around and around and around....
Then and only then, you can move onto adjusting throttle tip in and tweaking your tune...Look up a thread entitled "Success with settings 2 Inj vs Accel TPS1" very informative and will give you a starting point and guidance.
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Thanks for the reply. I read the thread you mentioned however I don't have a datalogit (yet) so I'm pretty limited on what I can do. Mods are 3" no cats no air pump, cheap bastard intake, LC-1 and of course a PFC. Also the engine is a JDM with a JDM harness (no egr and other smog crap) It ran very well with the JDM ecu with no codes. TPS is adjusted per service manual. I didn't have the LC-1 when running the JDM ecu so I don't know what the A\F ratios were although they were on the rich side. I am probably wasting everybody's time without a datalogit, but the FD keeps me broke. Maybe next payday. Thanks
Dave
Dave
#6
I got the new FC edit 2.129 software here http://www.mediafire.com/?ip4x3tixsjw57d4
I will be trying the new settings for tip in, seems easier to understand now. thanks.
I will be trying the new settings for tip in, seems easier to understand now. thanks.
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I was having the same issue and using the aforementioned tps/v and accel settings was a dramatic improvement. I highly recommend that you take the time to record any changes you make and the results of those changes, trust me it will be beneficial.
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#9
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send me your map I can take a look at it and let you know what I think.
-Frank
Frank@GarageBOSO.com
-Frank
Frank@GarageBOSO.com
I can't figure out the off idle stumble. I tried everything I could think of and I can make it worse but not better. Until just for grins I turned up the water temp 80 degree to 135. Now it runs fine but the A\F is a little rich. Does anybody know exactly what this does? I assume it enrichens the mixture but all over or just light load or what?
#11
![](https://www.rx7club.com/attachments/power-fc-forum-47/404188d1285027735-accel-settings-inj-vs-accel-tps1-eliminate-stumbles-tipin.png)
these are more recent settings that I posted in another thread https://www.rx7club.com/power-fc-forum-47/accel-settings-inj-vs-accel-tps1-eliminate-stumbles-916169/ need FC Edit 2.128 or later to display correctly
note that if you have a series 4 FC (narrow range TPS only) the settings should be a little bit different, at least in my experience
#13
If using these settings has side effects for you, you'll have to find a work around (by changing other maps) or just not use that table. It comes down to the limitations and quirks of the PFC more than anything else--the reason why I started messing with that table in the first place was because I could not get satisfactory results by only using the "Accelerate Injector" and "Inj vs Accel TPS1" tables.
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FC-Edit software is new to me. I have a long history of modifying piston cars and aircraft. Anyhow, I tried the posted tip-in and it was better but still would stumble so I increased those numbers slightly and it ran great. I noticed throttle cable was loose so I tightened it up and went for a ride. At operating temperature I was at full throttle through 1st 2nd and 3rd gear up "Harry's Hill" and about 8000 rpm in 3rd something went bang. I limped home and did a compression check. The front rotor is fine....the rear is really low. So..... I'm screwed for now. I'm not sure what caused the failure as the A\F was in the 10 range. Not sure what the boost was when it blew but before I dicked with the cable it would do 10-8-10. I'm thinking it overboosted and took out an apex seal. It was real fun to drive without the stumble. Can't wait to get it running right again.....
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10 AFR at 10 psi boost, if that is true, is way too rich. That would cause much carbon buildup which by itself can cause detonation if it starts burning off under boost. Excess carbon also causes side seals to stick.
I am not the only experienced person who thinks carbon fluff buildup is a major cause of detonation.
Cleaner is better!
I am not the only experienced person who thinks carbon fluff buildup is a major cause of detonation.
Cleaner is better!
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I got the new FC edit 2.129 software here http://www.mediafire.com/?ip4x3tixsjw57d4
I will be trying the new settings for tip in, seems easier to understand now. thanks.
I will be trying the new settings for tip in, seems easier to understand now. thanks.
What am I missing? I downloaded this file, it is has a .rar extension. Is there something else needed to run the file?
#20
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RAR stands for Roshal ARchive. It is a proprietary[2] archive file format that supports data compression, error recovery, and file spanning. It was developed by a Russian software engineer, Eugene Roshal (the first letter of his surname contributing to the name of the archive format), and is currently licensed by win.rar GmbH.
First time I have seen it.
You do not need to download and use each update unless it actually has a change that affects FD3S or overall useability.
First time I have seen it.
You do not need to download and use each update unless it actually has a change that affects FD3S or overall useability.
#22
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![](https://www.rx7club.com/attachments/power-fc-forum-47/404188d1285027735-accel-settings-inj-vs-accel-tps1-eliminate-stumbles-tipin.png)
these are more recent settings that I posted in another thread https://www.rx7club.com/showthread.php?t=916169 need FC Edit 2.128 or later to display correctly
note that if you have a series 4 FC (narrow range TPS only) the settings should be a little bit different, at least in my experience
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