[Bluesummer]

Just wondering, does the JB4 work on the new 640? Which harness will I have to use...

[NeoN]

Unsure of what map to run:

JB4, Stage 2

93 octane all the time (BP gas)
N55
BMS Intake
Soon to be: Vishnu Catted DP (100 cell race version)

Currently I've been switching around from map 1,2, and 5
I ran map 5 for a few weeks, eventually it had great low end, great response, 15 psi initially, then would taper off to 10psi redline (1/2 fuel mark).
I switch to map 4 to test it out, and it would make 10-11psi around 4000 rpm then taper off to 9psi redline
Map 1 would yield similar results, with 11-12 psi then tapering off to 10 psi redline
Map 2 was similar to map 5 but i feel i had better low-end with map 5. 13-14 psi tapering off to 11 psi
Any reason why my map 5 after full learning process (3 weeks on map 5) would boost to 15 psi initially then taper to 10 psi. If i gunned the car at 40mph and it dropped to 2nd gear, say 4500 rpm and pull to redline, it would only hit 10psi and stay there. nothing more. if I accelerate from a stop it would boost to 15psi ---> 10 psi redline.
Now map 5 is similar to map 2, 12-13 psi tapering off to 11 psi redline.
Should i be datalogging all this information, such as timing advance, boost, and then choose what's the best? or just leave it on 5 and assume the unit knows better than me?

So map 2 or map 5? That is the question.

Also, I will be hitting the track next week with 100 octane, what map is best for that?

Brett

[Track Master]

Map2 always feels better to me and adapts faster although during top end Map5 makes a few more hp.

[NeoN]

Originally Posted by Track Master

Map2 always feels better to me and adapts faster although during top end Map5 makes a few more hp.

Interesting. I love map 2 for daily use. U think map 5 is better for the track? My catted downpipe is amazing. added tons of torque and spool!!

[Terry @ BMS]

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