Ive read like 3 different sites and have seen 3 different ways to tune. Some say look at fuel trims but some say not to if you dont have an AFPR (I dont have one) If so what trims am I looking at on my logger? Ive go the MMCD program
Current setup: 16G, FMIC, 255, 2 1/2 UICP, lower honeycomb removed and black screw screwed out flush, Apexi N1 DP and catback, External dump 02 housing, Im sure im forgetting a few things but thats the most of it.
Anyone have an idea of a baseline tune? Ive got the SAFC not the SAFC II
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I used to have a 420A...
'92 TSi AWD
11.8 @ 119mph 470awhp 405 ft/lb torque 30psi on E85 w/ Borg Warner S256 Turbo
#10577, "RE: How to tune with 650's" In response to Reply # 0
I'm not going to be a lot of help, but I think with 650s, an AFPR is a MUST! If you want a bolt-on AFPR, go to www.fullthrottlespeed.com and ask them if they have them in stock. I had to wait over a month because they were out of parts, but I have it now and it is great, and like I said, bolt on. Good luck tuning the 650s.
Reverse El-Glo HVAC Panels Update: Finished Expected Release Date: As soon as they mail them to me and I make sure they fit and work
#10578, "RE: How to tune with 650's" In response to Reply # 1
Originally posted by FlyinEsi I'm not going to be a lot of help, but I think with 650s, an AFPR is a MUST! If you want a bolt-on AFPR, go to www.fullthrottlespeed.com and ask them if they have them in stock. I had to wait over a month because they were out of parts, but I have it now and it is great, and like I said, bolt on. Good luck tuning the 650s. Reverse El-Glo HVAC Panels Update: Finished Expected Release Date: As soon as they mail them to me and I make sure they fit and work
Originally posted by DR1665 bubble = teh bust3d.
hmm... I think theres someone on here running 650's without one. Do you have any suggestions on how to tune with the SAFC?
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I used to have a 420A...
'92 TSi AWD
11.8 @ 119mph 470awhp 405 ft/lb torque 30psi on E85 w/ Borg Warner S256 Turbo
#10580, "RE: How to tune with 650's" In response to Reply # 3
Originally posted by Jeff_99gs AFPR is NOT a must with 650s. Tune way rich then back out from there. Put everything at +10 and work your way down. Keep track of your knock count and timing. Not your o2 readings. RRE has base lines to use I believe. They did when I started tuning anyway.
What about tuning Lo throttle and Hi Throttle? How do I tune each of them?
With the knock and timing, Is the knock high when its lean or rich? Also what about the timing?? What about looking at fuel trims, some sites have said to monito that too, What on the logger am I looking at for the fuel trim? I have the MMCD program
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I used to have a 420A...
'92 TSi AWD
11.8 @ 119mph 470awhp 405 ft/lb torque 30psi on E85 w/ Borg Warner S256 Turbo
#10581, "RE: How to tune with 650's" In response to Reply # 4
I read on RRE's site, I think, to tune on low throttle, set your rpms with the throttle at whatever you want to set and lean it out until you can hear the exhaust popping a little bit.
Someone please verify this...
Hi-Throttle, I have no idea about, that is why I got dsmlink.
#10582, "RE: How to tune with 650's" In response to Reply # 5 Jun-10-04 12:49 PM by HybriDSM
Don't tune by "popping sound". Get a datalogger at the very least and tune with knock counts. Doing it any other way is just guess work.
Set the Low to 20% and hi to 80% and tune super rich and back it down til' your 02's are under control but you are still not knocking (well a count here or there is passable but not recommended). The setting for hi are the important ones as those represent the settings that are default at WOT and close to full throttle. 20% setting are those that exist when the car is idling and having barely any gas applied. All throttle positions in between are computed by taking the mathematical average of 20 and 80 for any given throttle percentage. This means, at exactly 50% throttle, the car will take 20 and 80 and average them out.
Knock means lean means bad means give more fuel before you melt piston.
#10583, "RE: How to tune with 650's" In response to Reply # 6
Originally posted by HybriDSM Don't tune by "popping sound". Get a datalogger at the very least and tune with knock counts. Doing it any other way is just guess work. Set the Low to 20% and hi to 80% and tune super rich and back it down til' your 02's are under control but you are still not knocking (well a count here or there is passable but not recommended). The setting for hi are the important ones as those represent the settings that are default at WOT and close to full throttle. 20% setting are those that exist when the car is idling and having barely any gas applied. All throttle positions in between are computed by taking the mathematical average of 20 and 80 for any given throttle percentage. This means, at exactly 50% throttle, the car will take 20 and 80 and average them out. Knock means lean means bad means give more fuel before you melt piston.
What about fuel trim?? Should I look at that too? Ive heard since I dont have an AFPR not too look at them for some reason.
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I used to have a 420A...
'92 TSi AWD
11.8 @ 119mph 470awhp 405 ft/lb torque 30psi on E85 w/ Borg Warner S256 Turbo
#10584, "RE: How to tune with 650's" In response to Reply # 7
Originally posted by Hult250R
Originally posted by HybriDSM Don't tune by "popping sound". Get a datalogger at the very least and tune with knock counts. Doing it any other way is just guess work. Set the Low to 20% and hi to 80% and tune super rich and back it down til' your 02's are under control but you are still not knocking (well a count here or there is passable but not recommended). The setting for hi are the important ones as those represent the settings that are default at WOT and close to full throttle. 20% setting are those that exist when the car is idling and having barely any gas applied. All throttle positions in between are computed by taking the mathematical average of 20 and 80 for any given throttle percentage. This means, at exactly 50% throttle, the car will take 20 and 80 and average them out. Knock means lean means bad means give more fuel before you melt piston.
What about fuel trim?? Should I look at that too? Ive heard since I dont have an AFPR not too look at them for some reason.
I never have really looked at fuel trims. Maybe Jeff can chime in on that, but I personally have never used that as a tuning tool.
#10585, "RE: How to tune with 650's" In response to Reply # 5
Originally posted by FlyinEsi I read on RRE's site, I think, to tune on low throttle, set your rpms with the throttle at whatever you want to set and lean it out until you can hear the exhaust popping a little bit. Someone please verify this... Hi-Throttle, I have no idea about, that is why I got dsmlink.
I got the info from RRE but its pretty much just to tune with 02's Id rathernot do that becase its not as accurate and my 02 sensor might need replaced...
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I used to have a 420A...
'92 TSi AWD
11.8 @ 119mph 470awhp 405 ft/lb torque 30psi on E85 w/ Borg Warner S256 Turbo
#10586, "RE: How to tune with 650's" In response to Reply # 9
Look at timing if you're using a pocketlogger--its not as good as knock but it helps. I"m pretty sure you want to shoot for 18-20 degrees advance at WOT. Another helpful tool is EGT's after you get the basics dialed in, but remember: EGT's will shoot up and give you a "false positive" about lean conditions when its too rich b/c flames travel from the combustion chambers into the exhaust manifold at high fuel levels.
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Black 98 GST missing her owner and looking for a new one...Inquiries welcome
