I found my problem.
10-03-2016, 08:56 PM
#9
Junior Member
Thread Starter
iTrader: (1)
Join Date: Jan 2016
Location: Utah
Posts: 109
Total Cats: -30
It was done by fnp tuning and I had a hunch since day one tune was off.
Stock internals(9:1 comp i am pretty sure). 8.5 psi boost. rx8 yellow injectors, 91 octane is the highest we get around here.
Stock internals(9:1 comp i am pretty sure). 8.5 psi boost. rx8 yellow injectors, 91 octane is the highest we get around here.
Reply
0
0
10-03-2016, 09:41 PM
#10
Retired Mech Design Engr
iTrader: (3)
Join Date: Jan 2013
Location: Seneca, SC
Posts: 5,009
Total Cats: 857
Do you have any logs? I'm interested to hear Andrew's comments. But I will hazard a guess with what I saw.
To me, the VE table looks like it was created while "Incorporate AFR Target" was active, but that feature was later turned off. That, along with the MAT corrections makes me guess running lean. Spark does not seem that bad. Lots of EGO authority, but I'm not sure enough.
To me, the VE table looks like it was created while "Incorporate AFR Target" was active, but that feature was later turned off. That, along with the MAT corrections makes me guess running lean. Spark does not seem that bad. Lots of EGO authority, but I'm not sure enough.
Reply
0
0
10-04-2016, 11:34 AM
#12
Senior Member
iTrader: (1)
Join Date: Sep 2011
Location: Lambertville, NJ
Posts: 1,215
Total Cats: 74
I don't see any glaring problems in the log. I guess the low atmospheric pressure (you only seem to be seeing 87kpa at FT and low RPM) is due to elevation- correct?
Also why is there this dip in your spark advance around 4400rpm? Was it knocking? Is that spark tuned on the dyno?
Also why is there this dip in your spark advance around 4400rpm? Was it knocking? Is that spark tuned on the dyno?
Reply
0
0
10-04-2016, 07:02 PM
#16
Junior Member
Thread Starter
iTrader: (1)
Join Date: Jan 2016
Location: Utah
Posts: 109
Total Cats: -30
I don't see any glaring problems in the log. I guess the low atmospheric pressure (you only seem to be seeing 87kpa at FT and low RPM) is due to elevation- correct?
Also why is there this dip in your spark advance around 4400rpm? Was it knocking? Is that spark tuned on the dyno?
Also why is there this dip in your spark advance around 4400rpm? Was it knocking? Is that spark tuned on the dyno?
I have no idea. 3 inch plumbing maybe?
Reply
0
0
10-07-2016, 12:36 AM
#17
Junior Member
Thread Starter
iTrader: (1)
Join Date: Jan 2016
Location: Utah
Posts: 109
Total Cats: -30
I'm a day away from putting my built motor in and want to be as safe as possible as it wasn't the cheapest thing I've ever bought. Do I revert to the stock tune, break it in, then tow it to the tuner (probably not the same tuner) or will it be fine to break it in with the current tune and drive it over there just staying out of boost?
Reply
0
0
10-07-2016, 09:58 AM
#18
I've never "broken in" any engine. Ever. My dirtbikes go from the dealer to the track. My built miata went from tune to autocross. Like 15 miles, maybe less. No problems ever. Althoigh with my miata, i botched the initial tune process pretty bad. So maybe that counts as a break in period? Not saying no to break in, but I don't do it.
I would go straight to the dyno- tuner. Depending on how far you are, maybe take it to the tuner with the current tune as a base. Otherwise, if you have forged pistons now, it should be safe, for a few minutes longer than the last engine....
I would go straight to the dyno- tuner. Depending on how far you are, maybe take it to the tuner with the current tune as a base. Otherwise, if you have forged pistons now, it should be safe, for a few minutes longer than the last engine....
Reply
0
0
Thread
Thread Starter
Forum
Replies
Last Post
