Timing?
08-11-2009, 09:27 AM
#103
Senior Member
You have never given me a tune??? The lnf base tune that I am using is the other bryans, maybe he got them confused, I don't know the lnf's nearly as well as I do the lsj's hence why I was using that as something to get started. As far as my tunes go I have never even seen a tune from you, even though I would like to. I don't really see a problem with me going around and tuning peoples cars if they are happy with what I am giving them. I make sure there car is safe and not pushed right to the edge, give them a proper afr, make sure there not running to much timing etc, and they have always been happy. It's not like I am charging them an arm and a leg and telling them they will win every race. I'm really not trying to argue with you, but I don't see any harm/foul in tuning peoples cars??
this, i want to know.
i keep my sharing to people whom are of the educated lot, you have proven that you are not to that level yet.
the "harm" i see in you useing OTHER people maps is simple, your profiting, and proliferating off other peoples work. all while not understanding why things are done specific ways.
and that, tool, is my biggest pet-peeve.
also to the one who asked, MBT and such are all derived from engine VE vs RPM.
peak torque can be shifted around with advance, however much past 5600 or so and the cam falls of hard enough that you have to kill cylinder fill with fuel in order to support it. but the later that peak hits, the higher your power curve will climb, and to top it all off, every thing becomes more linear as the math for horse power starts to work in your favor. post 5252.
thus your curve should become a semi-horse shoe, as you MUST fallow cyl pressure for max results. the only way to get a hold of thus mark is time and effort.
this is basic stuff here people, there are no tricks or snazzy formulas.
08-11-2009, 12:13 PM
#106
ok well i got my car re-tuned the other day to adjust the afr that my header/dp/exhaust messed around with. Also my trim was at 25% so we fixed that. im now at 11.9afr and 25* of timing. Still havent seen knock and iat2 got to 149* after 3 pulls on the highway in 27*C weather. Man that TVS just wants to keep making power...lol
08-11-2009, 02:02 PM
#108
08-11-2009, 02:33 PM
#110
whether people say u can or cant. I'm not risking it. I'm pretty sure im pushing the limts of my engine as is...im not going to take any more chances in blowing it up. 11.9AFR 25* timing, 20psi boost 7200rpm rev limit is good enough for me on stock internals.
08-11-2009, 05:20 PM
#113
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08-11-2009, 11:28 PM
#115
ok well i got my car re-tuned the other day to adjust the afr that my header/dp/exhaust messed around with. Also my trim was at 25% so we fixed that. im now at 11.9afr and 25* of timing. Still havent seen knock and iat2 got to 149* after 3 pulls on the highway in 27*C weather. Man that TVS just wants to keep making power...lol
Useta huh?
08-17-2009, 09:02 PM
#119
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I would smooth that out. Big spikes like going from 7degrees to 19degrees isn't necessarily "bad" but is harder on the vehicle from what I was taught at least. With the 2.9 and 42lbers I would be more worried about idc's and pw instead of timing personally. Are you using any timing multipliers/adders? What is the total timing the car is seeing on a wot pull?
08-17-2009, 09:12 PM
#120
I would smooth that out. Big spikes like going from 7degrees to 19degrees isn't necessarily "bad" but is harder on the vehicle from what I was taught at least. With the 2.9 and 42lbers I would be more worried about idc's and pw instead of timing personally. Are you using any timing multipliers/adders? What is the total timing the car is seeing on a wot pull?
There is IAT adders. But they really don't come into play until the car sees 140 IAT. So it has to be on fire.
There are ETC adders that start at 140 and lower. And ETC subractors that start at 248 and higher. Again. They should never be touched once the car is warmed up.
08-18-2009, 12:11 AM
#122
08-18-2009, 03:12 PM
#124
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I'm circuit driving my 2.2 OE valves which are weaker to 8200 rpm at each trackday, with stiffer springs.
Still alive, approx 8000 km and 1000+ km on track with a 12.8:1 AFR.
(In truth, I had a set of SiValves. Intakes are in the engine, but exhausts were crappy and out of tolerances so stuck with OE ones for exhausts...)
Still alive, approx 8000 km and 1000+ km on track with a 12.8:1 AFR.
(In truth, I had a set of SiValves. Intakes are in the engine, but exhausts were crappy and out of tolerances so stuck with OE ones for exhausts...)
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