Better Megajolt Map

DaviesDJ · Post by **DaviesDJ** » Sat Aug 17, 2013 10:00 am

Dear all - I am running the standard supplied mega jolt map on my 5.0 Landy v8 on and Eddie 600 and performed manifold and stage "3" heads. Does anybody else have a better map- I run mainly 97-99 octane and a 10.2-10.4 CR - want to reconfigure this afternoon - if no maps available any general tips at all??

ChrisJC · Post by **ChrisJC** » Sat Aug 17, 2013 10:24 am

Bite the bullet and stick it on a rolling road.

Chris.

DaviesDJ · Post by **DaviesDJ** » Sat Aug 17, 2013 10:36 am

I know your right mate, but I will have to change the wheels (too knobbly apparently) and just wondered if I could look at somebody else's map I could see how they optimised it beyond the standard - think more advance in the mid range when under low to moderate load may help

Eliot · Post by **Eliot** » Sat Aug 17, 2013 6:20 pm

I've run the dakar on a dyno twice now - i run 35" general grabber mud terains.

picture:
http://www.mez.co.uk/dcam/DSCF3079.JPG

DaviesDJ · Post by **DaviesDJ** » Sun Aug 18, 2013 6:45 am

Awesome! Where was that? My peviously local rolling road in northants said they wanted me on road tyres. I am now in Birmingham - any body know a good 4 wheel RR here that knows mega jolt and carbs? Did you see a lot of transmission loss with those tyres?

martyn123 · Post by **martyn123** » Sun Aug 18, 2013 7:46 am

5.0 V8 running Edelbrock and Megajolt also in Birmingham (sutton) just working on fresh air intake system before i get mine tuned.

Would be interested to find out who you use,

Martyn

Eliot · Post by **Eliot** » Sun Aug 18, 2013 8:15 am

Dyno was Marlin Motors in Bletchley. Perry organises dyno days there from time to time.

DaviesDJ · Post by **DaviesDJ** » Sun Aug 18, 2013 9:56 pm

Would be interested in bletchley for sure, Martyn's what are you running that in? What stage of tune mate? We should meet up and compare notes!

martyn123 · Post by **martyn123** » Mon Aug 19, 2013 8:33 am

Hi,

www.marcosmantula.com is my toy.

Its going off for a interior trim very shortly and when it's back home i plan to take the car to,

http://www.lloydspecialistdevelopments.co.uk/

who have some experience of Megajolt so hopefully will do a good job, car has stage 3 heads, stealth cam and was built up for me by V8 Developments (and it only weighs 820kgs)

Regards,

Martyn....

martyn123 · Post by **martyn123** » Tue Aug 05, 2014 6:09 pm

Hi,

Not sure how to post photographs on here but have had my car tuned today and uploaded a magajolt map and dyno results on my blog if that is any use to you,

Www.marcosmantula.com

Regards,

Martyn...

DaveEFI · Post by **DaveEFI** » Tue Aug 05, 2014 6:40 pm

What's the offset at the trigger? Ie, how much do you add to those figures to get the true timing relative to TDC, if at all?

martyn123 · Post by **martyn123** » Tue Aug 05, 2014 6:58 pm

Hi,

Bear with me, lack of knowledge !

The tuner told me it was reading 24 degrees using a strobe light and the megajolt system showed 12 degrees and he mentioned something about a wasted spark system you have to half it (or something similiar) but i do recall reading this somewhere,

Martyn

DaveEFI · Post by **DaveEFI** » Tue Aug 05, 2014 11:32 pm

The all out advance looks very conservative to me, so I'd guess you'd have to add the trigger offset to it for the true reading.

Wasted spark should show the same as sequential using a timing light - but some posh lights - the dial in advance ones - can get confused by it. I had to go back to my old one to get any reading at all.