base timing vs timing tables on mefi 3 or 4
#11
Registered
Join Date: Oct 2000
Location: Fresno, CA, 93722, USA
Posts: 1,436
Likes: 0
Received 5 Likes
on
5 Posts
I spoke with the provider of my mefi tuning program today and found out it does not support or show base timing/rpm setting so there is the reason why I cannot find it. I sent him a copy of the bin file as he was willing to look at it and tell me what my base timing/rpm setting is. I plan on setting a timing table to a set amount thru all kpa settings and running it up to verify how much timing the motor is actually getting as I do have a msd distributer,thanks for your help and advice,Smitty
With a centrifugal, you can also help the torque using the boost spark table, at 1200 to 3600rpm, you can ramp in more timing which helps it accelerate harder. Hard to do all in base spark table because it effects off idle manuvering.
Dustin
#12
Registered
I've run into the whole MSD distrubutor not making the actual timing that was being commanded. I had one that was off by 5 deg at WOT. Had to go stand next to it on the dyno with it at WOT with a timing light. You really start to second guess yourself and start thinking "did I tighten everything" ???
Eddie
Eddie
#13
Platinum Member
Platinum Member
Thread Starter
I've run into the whole MSD distrubutor not making the actual timing that was being commanded. I had one that was off by 5 deg at WOT. Had to go stand next to it on the dyno with it at WOT with a timing light. You really start to second guess yourself and start thinking "did I tighten everything" ???
Eddie
Eddie
I sent bin file to guy that sells mefi-burn and he e-mailed me back that its set at 8 degrees,my total timing then from the ecu and base IF distributer isn't running retarded should be 36 degrees (base timing is set to 6 degrees,ecu is set for 8 degrees base and table is set for 38 degrees above 5200 at 80 and 100 map). Motor runs perfect,it just feels awfully slow when you take the blower belt off and run with 400 to 450 less hp and speed drop from the century mark to mid 70's,Smitty
#14
Registered
Join Date: Oct 2006
Posts: 104
Likes: 0
Received 0 Likes
on
0 Posts
Smitty, I was just reading this, and another thread from August or so...
I have been away from the board for a while, but I too have enjoyed using the mefiburn. I set up a pretty safe program last April and have not touched it since. I know I left a good bit of negative advance under boost to keep things mellow for now. I have been waiting to I upgrade my steering/drive before I get to aggressive with the programing. I am seriously considering an extra ecu for an n/a tune also.
I still have a little hesitation off idle, did you ever solve your flat spot off idle/1000rpm prob?
What is your total (corrected) timing under full boost? (only 6psi in my case)
I have been away from the board for a while, but I too have enjoyed using the mefiburn. I set up a pretty safe program last April and have not touched it since. I know I left a good bit of negative advance under boost to keep things mellow for now. I have been waiting to I upgrade my steering/drive before I get to aggressive with the programing. I am seriously considering an extra ecu for an n/a tune also.
I still have a little hesitation off idle, did you ever solve your flat spot off idle/1000rpm prob?
What is your total (corrected) timing under full boost? (only 6psi in my case)