M4 Motec Tuning

[MIB]

I trying to find someone who can help me figure out how to tune it better. The car has gone 10.41@136 on pump gas, 19PSI and ET Radials. Car is very rich but it still makes good power. Any help would be greatly appreciated. Thanks

 

[jwaller]

I trying to find someone who can help me figure out how to tune it better. The car has gone 10.41@136 on pump gas, 19PSI and ET Radials. Car is very rich but it still makes good power. Any help would be greatly appreciated. Thanks

you might wanna consider taking it to motec in charlotte NC their facility there has a dyno and they offer tuning services for their customers.

 

[John Wilde]

I trying to find someone who can help me figure out how to tune it better. The car has gone 10.41@136 on pump gas, 19PSI and ET Radials. Car is very rich but it still makes good power. Any help would be greatly appreciated. Thanks

Ummm what is the problem?
It sounds like you are running great.
What is your combination?

 

[Big Stu]

I trying to find someone who can help me figure out how to tune it better. The car has gone 10.41@136 on pump gas, 19PSI and ET Radials. Car is very rich but it still makes good power. Any help would be greatly appreciated. Thanks

Car is running rich, and that is the problem? Manually back the fuel pressure off a little bit....

 

[PCS74]

It sounds as if you don't have any experience with aftermarket ecu's. Your best bet would be to find someone in your area who is experienced.



Chris S

 

[MIB]

I have a couple of guys with fast systems local but this is a different animal. The principle is the same but there are some functions that I am not familar with. Car has a Duttweiler built 274, GN1's, 76, etc. Car 60fts in the 1.4's on ET radials rich. I took a look at the WB so I know it's not tuned correctly. I am just suprised that this car made it on the 2004 Hotrod Power Tour running on this current tune. I appreciate your help and if I can't get it closer on my tune I may have to drive it down to Charlotte. I may just end of up taking over to Reds over EVTB to verify what I am reading. I appreciate your suggestions and help. Thanks

 

[John Wilde]

You may want to call duttweiler and try and get a differnt program to try.
805-659-2648.

Turbo People can also tune the motec.
www.turbopeople.com

You may also want to talk to Shane @ Motec he tunes many fast cars.
http://www.fastmotorsports.com/EFI Consulting.htm

 

[ChrisChow]

I have a couple of guys with fast systems local but this is a different animal. The principle is the same but there are some functions that I am not familar with. Car has a Duttweiler built 274, GN1's, 76, etc. Car 60fts in the 1.4's on ET radials rich. I took a look at the WB so I know it's not tuned correctly. I am just suprised that this car made it on the 2004 Hotrod Power Tour running on this current tune. I appreciate your help and if I can't get it closer on my tune I may have to drive it down to Charlotte. I may just end of up taking over to Reds over EVTB to verify what I am reading. I appreciate your suggestions and help. Thanks

What are your lamda readings at WOT? 4000 rpms, 4500, 5000, etc.

 

[MIB]

6000 .80/11.8, 5000 .85/12.5, 4000 .85/11.8, 3000 .85/11.5, idle .85/11.5. Car idles fine, it does not stumble. I am running NGK TR6's and I am checking plugs often. Car will run rich initially after startup. Once operating temp is reached it clears up, somewhat. It's when a transition from idle to light/heavy throttle that I see/smell gas. Main fuel tables for idle are:
Eff\RPM 1000 1500
175 31.5 32
160 31.5 33
145 32 33
130 31.5 31.5
115 31 31

Ignition tables are:
Eff\RPM 1000 1500
175 26 26
160 27 27
145 27 27
130 26.5 28
115 29.0 30.5

Overall trim 12.5%

Lamba Tables: range from .85-.97 depending on load. The RPM's are the same 1000-1500. I normally see .88 to .94 @idle.

 

[MIB]

I can send files Yes I am new to this I know the car has a lot more potential I just need some help. I am trying to only change one thing at a time and note what changes occur. You guys and Motec are keeping my head above water Thanks

 

[ChrisChow]

At WOT if you're lamda readings are between .80 and .85, I don't think you have a problem at all. Looks like you had Kenny dyno tune and it looks good to me.

Sorry, I cannot and would not want to change that...especially since I'm on a keyboard. IMHO, I don't know how much more tuning you need at WOT.

But I can suggest the following:
For me I like to see 12.5 to 13.0 A/F for light/part throttle acceleration.
For steady state cruise I shoot for 13.9 to 14.7 A/F
For dead idle (the IAC doesn't work) I like to see 12.4 to 13.0 so that when I drop it in gear it doesn't stall.
For heavy acceleration I like to see 11.9A/F.

If you say it's too much fuel while warming up, you may want to decrease the warm up enrichment by 1 to 5%.

Not trying to flame you, but I wouldn't go by smell (how are you seeing it?) for whether it's lean or rich, I would check the fuel lines for leaks and/or make sure your fuel line is compatible with pump gas. For example, when using race gas, my stainless braided line is acceptable for containment and my garage doesn't smell like race gas with fuel sitting in the lines over several weeks. On the other hand, my 10.60 street car with stainless braided line on pump gas most of the time smells up the garage with gas in a matter of 24 hours.

6000 .80/11.8, 5000 .85/12.5, 4000 .85/11.8, 3000 .85/11.5, idle .85/11.5. Car idles fine, it does not stumble. I am running NGK TR6's and I am checking plugs often. Car will run rich initially after startup. Once operating temp is reached it clears up, somewhat. It's when a transition from idle to light/heavy throttle that I see/smell gas. Main fuel tables for idle are:
Eff\RPM 1000 1500
175 31.5 32
160 31.5 33
145 32 33
130 31.5 31.5
115 31 31

Ignition tables are:
Eff\RPM 1000 1500
175 26 26
160 27 27
145 27 27
130 26.5 28
115 29.0 30.5

Overall trim 12.5%

Lamba Tables: range from .85-.97 depending on load. The RPM's are the same 1000-1500. I normally see .88 to .94 @idle.

 

[MIB]

When I check the plugs after driving on the highway the plugs are wet. The car has a very rich idle while in open air, to the point it will burn your eyes. I am fouling plugs often. Car runs real well on the street with 93@19 but I want to tune for 116@26 :biggrin: I want to at least run @10.0 on pump gas/alky and DR's on 93@19. The problem that I have is that I don't know enough about MOTEC and the learning curve has been steep. Motec and everyone on the board as I said before have been a great help. I am learning more and more everyday but it's painful. My friends around here, all have FAST I may have to pay Shane to drive the 5 hours for some tuning on the dyno or by a FAST system. Thanks Chris

 

[ChrisChow]

Part throttle driveability and accel enrichment is where you would need the most help with. I'm in Northern Cali is that any closer than Los Angeles?

 

[MIB]

Chris, I'm on the east coast :biggrin: I appreciate your offer . I think I fixed some of my problems. The guy that owned this car before me must have been an idiot I took some fuel out on the bottom. I also adjusted the valve lash. I knew that the motor had a roller but not solid :biggrin: More to follow