Rtek tuning and timing rtek2.1
02-16-10 | 08:43 PM
#1
Thread Starter
Zoom Zoom Boom
Joined: Nov 2002
Posts: 336
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From: South Florida
tuning and timing rtek2.1
I've got a few questions about tuning and using the rtek2.1. I'm goign to be using it for engine management soon and I'd like to better understand it. I've done some searching and reading so I want to ask a few q's..
My setup is:
Stock ports
Stock turbo
3" exhaust
FMIC
550/720's
FPR set @ 42psi static (40psi is stock fpr?)
external wastegate @7psi
I understand the AFR's and how I can adjust them. I have a wideband already setup.
I'm going to get a boost controller and tune for 15 psi but I plan on staying between 10-12. tuning for 15 incase a spike or somthing.
Ive seen some of the timing maps floating around. What I have a hard time understand is which ones to use. leading and trailing and the split. Are they 2 different ways for timing or are they used all together for timing. I guess easier would be, what is the split and whats it for? I know the leading and trailing, but I'm not understanding the split.
the Rtek has the boost based timing option. Is this somthing that is precalculated in the computer and you dont have to manually enter the timing?
My car is already running incredibly rich. M gauge only goes from 10-20:1 and I'm seeing 10 and I'm almost positive its below 10:1 I want to get my car tuned and running good enough to wait until Steve Khan is in the area again. So as much help as I can get to better understand the tuning for timing is greatly apriciated.
My setup is:
Stock ports
Stock turbo
3" exhaust
FMIC
550/720's
FPR set @ 42psi static (40psi is stock fpr?)
external wastegate @7psi
I understand the AFR's and how I can adjust them. I have a wideband already setup.
I'm going to get a boost controller and tune for 15 psi but I plan on staying between 10-12. tuning for 15 incase a spike or somthing.
Ive seen some of the timing maps floating around. What I have a hard time understand is which ones to use. leading and trailing and the split. Are they 2 different ways for timing or are they used all together for timing. I guess easier would be, what is the split and whats it for? I know the leading and trailing, but I'm not understanding the split.
the Rtek has the boost based timing option. Is this somthing that is precalculated in the computer and you dont have to manually enter the timing?
My car is already running incredibly rich. M gauge only goes from 10-20:1 and I'm seeing 10 and I'm almost positive its below 10:1 I want to get my car tuned and running good enough to wait until Steve Khan is in the area again. So as much help as I can get to better understand the tuning for timing is greatly apriciated.
02-17-10 | 12:47 AM
#2
stock pressure is about 36psi static. that could partly explain why you are rich.
split is just leading - trailing in degrees of advance BTDC. So if I fire the leading plugs at 15 degrees BTDC, and the trailing at TDC ("0") then I have a split of 15 degrees. Factory base timing at idle is -5 BTDC L -20 BTDC T , so a split of 15 degrees.
Boost based timing has to be put in manually. Timing is based on what the MAP sensor reads, not on what the AFM reads. Is boost based timing automatically "better" ? The biggest advantage is that there is way more information and "rules of thumb" for tuning timing based on boost pressure. And that's partly because FD's and FC's with standalones do not use an AFM at all.
split is just leading - trailing in degrees of advance BTDC. So if I fire the leading plugs at 15 degrees BTDC, and the trailing at TDC ("0") then I have a split of 15 degrees. Factory base timing at idle is -5 BTDC L -20 BTDC T , so a split of 15 degrees.
Boost based timing has to be put in manually. Timing is based on what the MAP sensor reads, not on what the AFM reads. Is boost based timing automatically "better" ? The biggest advantage is that there is way more information and "rules of thumb" for tuning timing based on boost pressure. And that's partly because FD's and FC's with standalones do not use an AFM at all.
02-17-10 | 10:57 AM
#3
Thread Starter
Zoom Zoom Boom
Joined: Nov 2002
Posts: 336
Likes: 0
From: South Florida
Your one of the guys I was hoping to reply to my thread so thanks alot!
I'll have to go change my fpr when I get home, thanks for that info too.
When you put the maps in, do you have to put all of them in? Its sound like to me, if you entering the leading and trailing, the split is already going to be configured from the information of the leading and trailing. No? Is the split always 15* difference? Sorry If i'm sounding like a noob. But like I said its just the split that threw me off.
I'm looking to get a pretty good conservative/moderate tune. By no means do I want to gain that extra 2hp and sacrafice reliability. I just want to be sure my motor will stay running while I wait for Steve Kan to get closer to my area to tune it. I do get pretty spirited driving so I want to make sure its ok!
I'll have to go change my fpr when I get home, thanks for that info too.
When you put the maps in, do you have to put all of them in? Its sound like to me, if you entering the leading and trailing, the split is already going to be configured from the information of the leading and trailing. No? Is the split always 15* difference? Sorry If i'm sounding like a noob. But like I said its just the split that threw me off.
I'm looking to get a pretty good conservative/moderate tune. By no means do I want to gain that extra 2hp and sacrafice reliability. I just want to be sure my motor will stay running while I wait for Steve Kan to get closer to my area to tune it. I do get pretty spirited driving so I want to make sure its ok!
02-17-10 | 11:31 AM
#4
From the Rtek manual
Split is the mathematical difference between the value at any given point on the leading map and the value at the same point on the trailing map, expressed in degrees. The Split map is a virtual map that exists only in the software. Values are calculated in real-time using the values of the Leading and Trailing maps. There is no actual Split map in the ECU.
Adjusting the split value results in changes to the trailing timing. For example if the Leading timing was 14.4 degrees and the trailing timing for that same cell was 14.2, Split would be 0.2. If you were to change the split to 0.4, the trailing map would be changed to 14.0.
Tapping the “Split” pushbutton at the top of the screen will display the Split map. You can view the Split Map using either the Table View or the “Map” view just like the leading and trailing maps
Adjusting the split value results in changes to the trailing timing. For example if the Leading timing was 14.4 degrees and the trailing timing for that same cell was 14.2, Split would be 0.2. If you were to change the split to 0.4, the trailing map would be changed to 14.0.
Tapping the “Split” pushbutton at the top of the screen will display the Split map. You can view the Split Map using either the Table View or the “Map” view just like the leading and trailing maps
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