Custom/Hybrid msd tl curves for bpipe,pfp and RRP

masterblaster

masterblaster

X-H2
no one here has msd tl curves for larger motors?

was runnin this,how far are others pushing it? I see atp curves more aggressive than this for 1000cc plus motors

bpipe
33 static
pulling 29 out
5000 begin retard
8000 rev
14 deg at 7000

have seen RRP pipe at
33 static
pulling 29 out
4000 begin retard
8500 rev
14 deg at 7000
 
CARBONX2

CARBONX2

Location
South Africa
Curve from Kyle at DASA and it works really well on 95oct(RON):
28deg
5000rpm begin retard
9000rpm rev limit with 15deg taken out
DASA 1200, Novi 48's, Flame TL, custom SS pipe(think SS version of RRP)
 
CARBONX2

CARBONX2

Location
South Africa
The rounded curve(blue) came with the Flame from ATP
The curve(red) Kyle gave me is much better, cleaned up the bottom end, far more punch
 

Attachments

  • DSC_0011.JPG
    DSC_0011.JPG
    75.8 KB · Views: 125
masterblaster

masterblaster

X-H2
that is a big diff in low end timing,the blue curve not hitting peak timing until 3500 is a good way to tame a 1200 for surf maybe? A msd curve couldnt look anything close to that. max timing at 1500 gets the big pipe into the power curve much quicker huh
 
CARBONX2

CARBONX2

Location
South Africa
It works like a dream, switching between the 2 curves is a huge difference. Runs very rich on low revs on ATP curve.
Wouldn't the MSD Start-Retard allow the same type of timing?
 
masterblaster

masterblaster

X-H2
the start retard on the msd is the point where it begins to pull out timing,with selectable deg you want to pull out,its a straight lline fall off not really a curve. You get all your static timing up to the point of start retard. your red curve looks much more close to what a msd tl curve would do
 
masterblaster

masterblaster

X-H2
post your settings and enlighten us all. Ive tried 3 diff curves with current motor,kept getting better with no det on pump gas.workin my way up to pretty aggressive,interested to know how aggressive guys are gettin away with on pump fuel
 
CARBONX2

CARBONX2

Location
South Africa
Switch S3 is Electric Retard - I think no spark for 2 revolutions
Switch S4 is the Start Retard - Retards timing 15deg below 1000rpm as far as I remember (Will give the same steep start to the curve - see illustration in manual on pg8)
 
masterblaster

masterblaster

X-H2


start retard on gives 20 deg extra retard for first revolution,this doesnt effect the curve. as you can see in the graph its giving you all your static timing from the time motor begins to rev until it reaches the retard rpm limit set.

I see some settings posted only pulling 17 to 19 of timing,I prefer the higher static and pulling 29 out with b pipe,this still leaves pretty high timing at 6500 to 7000ish for a big pipe,thats still making alot of torque up top,how many others have pulled this off successfully. Msd pulls it out at the same rate throughout the curve,would be nice if that had a setting as well toward the end of the curves rpm. guess thats were the programmable flame type ign comes in handy. have heard some cons with the flame as well. Maybe the dual dig feature of the msd makes up for it over the flame

carbonx2 what kinda rpms are you turnin with your pipe? at 21 deg at 7000 rpm,with pump fuel,some would be gettin concerned.
 
Last edited:
CARBONX2

CARBONX2

Location
South Africa
That curve is like mine, at 1500rpm it is at full advance.
Not sure on RPM, sounds around the 7500rpm. I have set rev-limit at 8500rpm. I am at 20deg @7000rpm, ATP was also concerned but it works and was based on info Kyle sent me
Only problem with Flame has been that it doesn't like to be connected when an intelligent charger like a Ctek is being used to charge the battery, messes up timing(Have to disconnect battery for a few minutes for it to reset). I now pull the fuse before charging and have had no more problems.

These are the emails between Kyle and myself:
ME: What is the suggested timing curve for the 1200 on pump gas? I have an ATP Flame ignition, 48 Novis and RRP type pipe(wet). The 2 curves they sent me are very different from each other and I would like to compare to what you suggest.
KYLE: I have no experience with that ignition. For MSD, we set the initial timing at 28º for pump gas
ME: What is the timing curve(retard, etc) on the MSD?
KYLE: 28º Initial, Started Retard @ 5000, Rev @ 9000 with 15º takeaway timing
 
speedysprocket

speedysprocket

Alex
Location
Chesapeake, VA
What are you talking about with static and "pulling out"? Yes, you can "statically" time the engine using the LED, but you still need to time it running with a timing light to verify. Then you set your initial retard, anywhere from 0 to 8 degrees from your base timing. "Pulling out" 29 degrees with give you 4 degrees advance if you started with 33... You must mean you retarded your base timing by 4 degrees.
And are you extrapolating to find your RPM at 7000? Because the total retard number you plug in happens at whatever you set the rev limit at. So if you take 15 degrees from the initial 29, your advance at the 8000 rev limit is 14. If you really have 14 degrees of advance at 7000 rpm, that means your only left with 6.5 degrees at your 8000 rev limit. If you meant your total retard was set to 15 on the dip switches, and you set your rev to 8000, your timing at 7000 is 29-10=19 degrees advance.
 
masterblaster

masterblaster

X-H2
the rev lim is used in this case to manipulate the total timing retard where i want it to be in the 5000 to 7000 range where this pipe is making its power,It wont actually rev to 8000 anyway,so the timing at that rpm means very little compared to where i want it to be in the rpms listed above.
Its a flat line fall off,not a programable curve.
 
You must log in or register to reply here.
Top Bottom