Raleigh/Durham/Triangle Area Meet
Oct 1, 2009 | 06:58 PM
#2551
Evolved Member
iTrader: (16)
Joined: Jan 2007
Posts: 691
Likes: 0
From: Fayetteville, NC via Puerto Rico
To get a really thorough tune, it takes too long on the Dyno. The Dyno is good to make drastic changes and make baby steps to get something going or to get something that has gone completely wrong and make it right.
But to get a thorough tune that works well on the street for daily driving, you need to do Dyno pulls at every throttle position through several gears and log all your actual loads.
I'm also unsure about how well the Dyno can load the vehicle properly. The weight of the vehicle is a large factor in calculating the load along with the amount of air that is flowing into the intake. Its hard to emulate all those factors on a Dyno. The load dictates so much of how the ECU operates. I have been road tuning my Evo ever since the new EBCS was initially tuned at Taylors.
I have been able to make great improvements in overall drivability. I basically log several runs here and there at night and have been slowly tweaking the maps.
But to get a thorough tune that works well on the street for daily driving, you need to do Dyno pulls at every throttle position through several gears and log all your actual loads.
I'm also unsure about how well the Dyno can load the vehicle properly. The weight of the vehicle is a large factor in calculating the load along with the amount of air that is flowing into the intake. Its hard to emulate all those factors on a Dyno. The load dictates so much of how the ECU operates. I have been road tuning my Evo ever since the new EBCS was initially tuned at Taylors.
I have been able to make great improvements in overall drivability. I basically log several runs here and there at night and have been slowly tweaking the maps.
Ill be back to this one in a bit......
You lost me at "really thorough tune" not on a dyno part
Oct 1, 2009 | 07:27 PM
#2554
.I'm not a fan of just maxing out the BTEL. I believe its better to actually take the time to zero out the Boost Error and find all the actual loads at the different TPS just like the BTEL is setup. Then load the actuals accounting for the Boost Load Offset and of course putting the Boost Error back in.
My boost is very smooth now across all throttle positions taking this approach. It was not smooth just maxing out the BTEL tables. I'm now figuring out when the low gear table is used vs the high gear table. They are not identical stock and I don't think they should be identical after a tune. This is going to take a little more time.
Last edited by smanders; Oct 1, 2009 at 07:32 PM.
Oct 1, 2009 | 07:34 PM
#2555
wanna throw a tune in to mine real quick? 
nothing aggersive just so I'm not running a/f of 9 have a bung for the 02 and can hook up my wide band if your game.
nothing aggersive just so I'm not running a/f of 9 have a bung for the 02 and can hook up my wide band if your game.To get a really thorough tune, it takes too long on the Dyno. The Dyno is good to make drastic changes and make baby steps to get something going or to get something that has gone completely wrong and make it right.
But to get a thorough tune that works well on the street for daily driving, you need to do Dyno pulls at every throttle position through several gears and log all your actual loads. I'm also unsure about how well the Dyno can load the vehicle properly. The weight of the vehicle is a large factor in calculating the load along with the amount of air that is flowing into the intake. Its hard to emulate all those factors on a Dyno. The load dictates so much of how the ECU operates. I have been road tuning my Evo ever since the new EBCS was initially tuned at Taylors.
I have been able to make great improvements in overall drivability. I basically log several runs here and there at night and have been slowly tweaking the maps.
I have a dedicated Acer Netbook, Open Port 2.0, EvoScan, EcuFlash, and an Innovate LC-1 wideband. I decided to get a HFC to easily integrate the wideband. I'm really pleased with the setup. However, the learning curve has been steep but its coming along.
But to get a thorough tune that works well on the street for daily driving, you need to do Dyno pulls at every throttle position through several gears and log all your actual loads. I'm also unsure about how well the Dyno can load the vehicle properly. The weight of the vehicle is a large factor in calculating the load along with the amount of air that is flowing into the intake. Its hard to emulate all those factors on a Dyno. The load dictates so much of how the ECU operates. I have been road tuning my Evo ever since the new EBCS was initially tuned at Taylors.
I have been able to make great improvements in overall drivability. I basically log several runs here and there at night and have been slowly tweaking the maps.
I have a dedicated Acer Netbook, Open Port 2.0, EvoScan, EcuFlash, and an Innovate LC-1 wideband. I decided to get a HFC to easily integrate the wideband. I'm really pleased with the setup. However, the learning curve has been steep but its coming along.
Oct 1, 2009 | 07:46 PM
#2556
Here's a good reference for Engine Load.
http://www.stealth316.com/2-fuelinjection.htm#j3a
Here's a great reference for Boost.
http://www.perrinperformance.com/pages/show/113
http://www.stealth316.com/2-fuelinjection.htm#j3a
Here's a great reference for Boost.
http://www.perrinperformance.com/pages/show/113
Oct 1, 2009 | 08:09 PM
#2557
Evolved Member
iTrader: (16)
Joined: Jan 2007
Posts: 691
Likes: 0
From: Fayetteville, NC via Puerto Rico
Well getting a tune at 80+ TPS is great and pretty straight forward on a dyno. But a good tune from 30-70 takes more time. I don't drive around with my throttle planted 100%....as difficult as it is .
I'm not a fan of just maxing out the BTEL. I believe its better to actually take the time to zero out the Boost Error and find all the actual loads at the different TPS just like the BTEL is setup. Then load the actuals accounting for the Boost Load Offset and of course putting the Boost Error back in.
My boost is very smooth now across all throttle positions taking this approach. It was not smooth just maxing out the BTEL tables. I'm now figuring out when the low gear table is used vs the high gear table. They are not identical stock and I don't think they should be identical after a tune. This is going to take a little more time.
.I'm not a fan of just maxing out the BTEL. I believe its better to actually take the time to zero out the Boost Error and find all the actual loads at the different TPS just like the BTEL is setup. Then load the actuals accounting for the Boost Load Offset and of course putting the Boost Error back in.
My boost is very smooth now across all throttle positions taking this approach. It was not smooth just maxing out the BTEL tables. I'm now figuring out when the low gear table is used vs the high gear table. They are not identical stock and I don't think they should be identical after a tune. This is going to take a little more time.
How fast are you goin at 30%tps and at 70???
If your fuel trims are set why are you trying to tune closeloop?
whats your tps% at 55mph?
Oct 1, 2009 | 08:14 PM
#2558
I have one. I think they have a newer version out, The car tends to wheel hop at low rpm take offs but It feels like it decreased engine movement a little and made shifting a little smoother when I'm on the throttle. All-in-all I'll probably just put a lightweight center member there instead. I think your talking about their engine roll stopper or the mount connected to the center member.
Oct 1, 2009 | 08:15 PM
#2559
If anyone cares here are some pics I took today
https://www.evolutionm.net/forums/ev...ml#post7566287
https://www.evolutionm.net/forums/ev...ml#post7566287
Oct 1, 2009 | 08:20 PM
#2560
Oct 1, 2009 | 08:23 PM
#2562
hows ur job going man? still doing these crazy hours?
Oct 1, 2009 | 08:28 PM
#2563
yeah but we all planned to go sunday...
you know all u need to do it bring beer and I shall wrench...haha...I may need to borrow a reciprocating saw from Tony if he has 1...Thats how I cut my stock motor mount out...there are other ways to do it but i think that is the easiest and quickest...
you know all u need to do it bring beer and I shall wrench...haha...I may need to borrow a reciprocating saw from Tony if he has 1...Thats how I cut my stock motor mount out...there are other ways to do it but i think that is the easiest and quickest...
Oct 1, 2009 | 08:30 PM
#2564
yeah but we all planned to go sunday...
you know all u need to do it bring beer and I shall wrench...haha...I may need to borrow a reciprocating saw from Tony if he has 1...Thats how I cut my stock motor mount out...there are other ways to do it but i think that is the easiest and quickest...
you know all u need to do it bring beer and I shall wrench...haha...I may need to borrow a reciprocating saw from Tony if he has 1...Thats how I cut my stock motor mount out...there are other ways to do it but i think that is the easiest and quickest...
good call! will do one of those days then.
I am waitting on scott's (ttp) paypal, and should probably recieve it soon.
Oct 1, 2009 | 08:33 PM
#2565