hitting rev limiter after tcu tune
02-01-2012, 06:38 PM
#51
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2003 porsche 996 turbo
what the engine is doing thru logging is the only way to know for sure this mod is safe for the cars. mind you im not knocking the tuner i work with jerry often on mods and retunes. folks see these statements and take it for gold. if theres a logg showing the boost, tps, afr, timing , engine load , rpm i would like to see it. if not ill do it next week when mine comes back from houston.
02-01-2012, 06:58 PM
#52
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2002 C32 AMG, 2013 GLK 350/4, 2015 E63S AMG Wagon
without dataloggs i dont see how you can say this. remember a car running 14.4 will run like a raped ape especially just before it blows!
what the engine is doing thru logging is the only way to know for sure this mod is safe for the cars. mind you im not knocking the tuner i work with jerry often on mods and retunes. folks see these statements and take it for gold. if theres a logg showing the boost, tps, afr, timing , engine load , rpm i would like to see it. if not ill do it next week when mine comes back from houston.
what the engine is doing thru logging is the only way to know for sure this mod is safe for the cars. mind you im not knocking the tuner i work with jerry often on mods and retunes. folks see these statements and take it for gold. if theres a logg showing the boost, tps, afr, timing , engine load , rpm i would like to see it. if not ill do it next week when mine comes back from houston.
02-01-2012, 07:38 PM
#53
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without dataloggs i dont see how you can say this. remember a car running 14.4 will run like a raped ape especially just before it blows!
what the engine is doing thru logging is the only way to know for sure this mod is safe for the cars. mind you im not knocking the tuner i work with jerry often on mods and retunes. folks see these statements and take it for gold. if theres a logg showing the boost, tps, afr, timing , engine load , rpm i would like to see it. if not ill do it next week when mine comes back from houston.
what the engine is doing thru logging is the only way to know for sure this mod is safe for the cars. mind you im not knocking the tuner i work with jerry often on mods and retunes. folks see these statements and take it for gold. if theres a logg showing the boost, tps, afr, timing , engine load , rpm i would like to see it. if not ill do it next week when mine comes back from houston.
02-01-2012, 07:52 PM
#54
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2003 porsche 996 turbo
Hey man sorry if I gave you or anyone else on this tread from my last post about my car being fixed the wrong impression. I guess I was so excited that it has seemed to be fixed and not having the big pause between shifts and wanted to let you guys know. I agree with you the only true way to know is through dataloggs. Curious to see when you get it back what your dataloggs are.
02-01-2012, 08:11 PM
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C63 AMG, P30
its all good man. i think folks sometimes dont realize the importance of datalogging at a minimum afr and boost if nothing else. i have seen time and time again folks will drop 3000$ for wheels and tires to look bling but wont spend 300$ for a wideband. im old school modder from mopars to gto's to harleys. engine size or make doesnt matter. monitering the diagnostics is vital long engine life
Thank you!
02-01-2012, 08:39 PM
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2003 porsche 996 turbo
while i appreciate the flowers im just giving back to the forum that gives to me. from the e55 guys to the c32 to the sl600 crowd i have made great friends met awesome builders and found a passion for cars i had forgotten.
02-04-2012, 04:37 PM
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ok guys i received the tcu today. and of course after installing my tcu, big manis the battery is dead!! doh! so its on the trickle charger and if the weather holds off for 20 minutes on sunday ill make a pass or 2 and logg it to see whats happening.
02-05-2012, 10:27 AM
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C55 AMG
+1 here. I am a C55 owner based in the London, UK who has been looking into Jerry's TCU tune. I spoke with Jerry a couple of weeks back & asked if he could put me in contact with any C55 owners who had had a TCU tune..... I'm still waiting for an update..? Any advice or comments much appreciated. I must say this form & post topic has been a real pleasure to view!
Last edited by just240; 02-05-2012 at 10:29 AM. Reason: more info
02-05-2012, 01:17 PM
#62
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allrighty who wants to know what the tcu is doing!!! from the start the tcu delay is gone. shift occurs at 6200 rpm and goes right into the next gear. is it faster than oem? jury is still out. afr spike is gone! takes about 650 rpm to complete the shuft. so shift occurs at 6200 and by 5550 the shift is complete and your on your way. no excessive jerk just a smooth flow into the next gear. tps drops from 98% to approx 69% and timing goes from -16 * to about -6* then back up. so all in all it looks like the mod is well on its way.
a couple things i talked to jerry about were raising the tcu rpm to 6450 so we get all the available power and theres a bit of a stutter when the car is in d and shifting from 1 to 2 and 2 to 3 . like the car wants to run harder. also theres a definate harder downshift in auto much like the blue tops folks talk about. he asked for me to have the trans adaptations reset and ill try that this week. should help the 1 -2 and 2-3 shift. all in all i think jerry is on the right path and fine tuning will continue for the next few weeks
a couple things i talked to jerry about were raising the tcu rpm to 6450 so we get all the available power and theres a bit of a stutter when the car is in d and shifting from 1 to 2 and 2 to 3 . like the car wants to run harder. also theres a definate harder downshift in auto much like the blue tops folks talk about. he asked for me to have the trans adaptations reset and ill try that this week. should help the 1 -2 and 2-3 shift. all in all i think jerry is on the right path and fine tuning will continue for the next few weeks
02-05-2012, 01:21 PM
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allrighty who wants to know what the tcu is doing!!! from the start the tcu delay is gone. shift occurs at 6200 rpm and goes right into the next gear. is it faster than oem? jury is still out. afr spike is gone! takes about 650 rpm to complete the shuft. so shift occurs at 6200 and by 5550 the shift is complete and your on your way. no excessive jerk just a smooth flow into the next gear. tps drops from 98% to approx 69% and timing goes from -16 * to about -6* then back up. so all in all it looks like the mod is well on its way.
a couple things i talked to jerry about were raising the tcu rpm to 6450 so we get all the available power and theres a bit of a stutter when the car is in d and shifting from 1 to 2 and 2 to 3 . like the car wants to run harder. also theres a definate harder downshift in auto much like the blue tops folks talk about. he asked for me to have the trans adaptations reset and ill try that this week. should help the 1 -2 and 2-3 shift. all in all i think jerry is on the right path and fine tuning will continue for the next few weeks
a couple things i talked to jerry about were raising the tcu rpm to 6450 so we get all the available power and theres a bit of a stutter when the car is in d and shifting from 1 to 2 and 2 to 3 . like the car wants to run harder. also theres a definate harder downshift in auto much like the blue tops folks talk about. he asked for me to have the trans adaptations reset and ill try that this week. should help the 1 -2 and 2-3 shift. all in all i think jerry is on the right path and fine tuning will continue for the next few weeks
This is good info.
02-05-2012, 01:54 PM
#64
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wish in could go out there and hammer on it but i have n/w full manis installed with the n/w dual cai and i went from 11.8 to 12.7 afr at the top of 2 so i need to retune. we had pulled 6% fuel out when i looped the fuel rail and i have removed 17" of line and rerouted the line so you guys running oem airboxes or 55 setup wont have to cut or modify anything to make it fit. now i need more fuel!
02-05-2012, 02:23 PM
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wish in could go out there and hammer on it but i have n/w full manis installed with the n/w dual cai and i went from 11.8 to 12.7 afr at the top of 2 so i need to retune. we had pulled 6% fuel out when i looped the fuel rail and i have removed 17" of line and rerouted the line so you guys running oem airboxes or 55 setup wont have to cut or modify anything to make it fit. now i need more fuel!
02-05-2012, 02:33 PM
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when the time is right!! heres a hint, think e55 and ttm!
02-05-2012, 02:36 PM
#67
wish in could go out there and hammer on it but i have n/w full manis installed with the n/w dual cai and i went from 11.8 to 12.7 afr at the top of 2 so i need to retune. we had pulled 6% fuel out when i looped the fuel rail and i have removed 17" of line and rerouted the line so you guys running oem airboxes or 55 setup wont have to cut or modify anything to make it fit. now i need more fuel!
02-05-2012, 02:43 PM
#68
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not at all. i have tested the tcu from 6500 to 6700 to 6900 to 6200 with the ecu at 6500. i believe if jerry stays under the 6500 rpm limit of the ecu the tcu will shift before hitting the rev limiter. so its a matter of telling him were you want the tcu to shift at. for those with minimal mods 6200 will do fine . for those with a large mod list and power that goes to 6500 a higher tcu limit would be best. for those heavy mods with nitrous then your looking at something completely custom
02-05-2012, 02:47 PM
#70
not at all. i have tested the tcu from 6500 to 6700 to 6900 to 6200 with the ecu at 6500. i believe if jerry stays under the 6500 rpm limit of the ecu the tcu will shift before hitting the rev limiter. so its a matter of telling him were you want the tcu to shift at. for those with minimal mods 6200 will do fine . for those with a large mod list and power that goes to 6500 a higher tcu limit would be best. for those heavy mods with nitrous then your looking at something completely custom
02-05-2012, 02:57 PM
#72
wish in could go out there and hammer on it but i have n/w full manis installed with the n/w dual cai and i went from 11.8 to 12.7 afr at the top of 2 so i need to retune. we had pulled 6% fuel out when i looped the fuel rail and i have removed 17" of line and rerouted the line so you guys running oem airboxes or 55 setup wont have to cut or modify anything to make it fit. now i need more fuel!
02-05-2012, 03:38 PM
#73
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2003 porsche 996 turbo
as for the 550 cc injectors.... no comment for now!
02-05-2012, 03:40 PM
#74
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everyone has their own opinions on whats the best afr to be at. my experience is 11.8 to 12.2 at wot. i wont run 1/4 mile or standing mile at 12.7 at the top of 3 to lean for my tastes.
