[DL700]

one main advantage would be the the ignition system... unlimited adjustability and unlimited rpm potential, and a way hotter spark, a ton less wiring for sure. Flywheel modification is $200 or its possible that a XR flywheel may work (gotta look at em side by side)

MSD CDI and Coil is about $400
most carbs are around $500 new

intake configuration could stay in place

44 mm Lectron or 44 FCr or TM would be nice l... maybe a 48 tm or LECTRON


Wiring in the MSD is simple but not for everyone

It will make more power when done

 

[DL700]

we wend Down 2+ mm from (a very effiently running) EFI tb. to the carb we use on the raptor and picked up 3% more hp...

unless u use a FLAT SLIDE throttle body there will always be power losses from the efi due the the plate and shaft.

 

[DL700]

right, just saying there is more power potential when getting away from the ecu and butterfly... Atomisation is a huge part in making the power, but ignition system is just as important

 

[DL700]

A few years back you would see allot of people making more power with carbs over EFI but that isn't the case anymore. The old systems were lame compared to what is available today and limited performance. With faster ECU's and broad tuning capabilities of today's EFI the carb is taking to the passenger seat of performance.

that was my own thoughts as well until we decided to actually run one...for drag race application.

 

[DL700]

yup that what i was refering to with the flat slide efi.. though they are a bit small....44 plus PLEASE!!

 

[DL700]

id get rid of the IAC, idle speed will be controlled by the plate

 

[DL700]

the efi has plenty of potential but also plenty of restrictions...next step on mikes is either Vortex or carb... both being about the same cost...

 

[DL700]

whats the cost on the Flat slide TB? im guessing in the 800$ range which isnt bad, hope it performs......

 

[DL700]

thats good to hear.