kumfasa
Well-known member
Hi Guys,
I am new to tuning, but am a good student. I have read all the ECMLINK wiki guides and other popular published tuning tutorials.
I have attached a link to logs from my latest round of tuning runs.
Dropbox link for log files
1 x idle log
1 x 5th gear pull from 2000rpm WOT
1 x 1st gear through 4th gear WOT
MOD LIST
I have a 1991 JDM Evo 0 with stock bottom end. 144.000kms (90,000miles)
The head has been ported and polished, with freshened valve seats, valves and some BC1100 valve springs and ARP head studs. (Stock cams)
B16G, evo8 MAF, 3" custom cold air intake straight to turbo inlet, Turbosmart BOV. (Stock large frontmount intercooler similar to the early evo's)
560 evo8 injectors, re-wired walbro 255, sard FPR set at 44psi base pressure. I run 98 octane pump gas (New Zealand is good like that).
Base timing set at 5 BTDC. Boost leak tested to 25psi leak free. All maintenance and servicing up to date (Filters, timing components etc...)
Am running ECMLINK Full V3
I have a couple of questions.
1/ Are there any glaringly obvious issues with the current setup? This is really just a sense check of the work I have done so far. Airflow and Fuel setup looks good to me but would like a second opinion.
2/ TIMING /ubbthreads/images/graemlins/uhh.gif
My initial approach to timing was to use the conservative evo 8 tables as a starting point. They got me up and running, but at 20psi boost the car felt flat and lifeless throughout the rev range. So I then decided to go back the the stock (1G) timing tables. Due to the aggressive nature of the stock tables I lowered all cells in the table by 2 degrees and took a few more degrees out of the high load areas at 2500 - 3500rpm. I also lowered the boost to 13psi at the same time. This really woke the car up and it felt strong everywhere. Even better than at 20psi with the evo8 timing tables!
As it stands I get very little knock when doing WOT runs as you can see in the logs, but at part/mid throttle I can sometimes get very high counts that will retard timing by up to 10 degrees, this occurs at the 2500-3000 rpm range and Loads of 1.0-1.4. It isn't consistent, sometimes it will drive through these areas with no knock other times it will hit 100 counts and pull almost all the timing. As a test I took 6 degrees of timing out of the timingmaxoct table through the ranges mentioned above and it made no difference to the knock behavior. The confusing part for me is that I can pull from 2000 rpm in 5th all the way to 7k with no knock in the same areas of the timingmaxoct table?! My thoughts are that it is phantom Knock but would like your knowledgeable thoughts.
I am new to tuning, but am a good student. I have read all the ECMLINK wiki guides and other popular published tuning tutorials.
I have attached a link to logs from my latest round of tuning runs.
Dropbox link for log files
1 x idle log
1 x 5th gear pull from 2000rpm WOT
1 x 1st gear through 4th gear WOT
MOD LIST
I have a 1991 JDM Evo 0 with stock bottom end. 144.000kms (90,000miles)
The head has been ported and polished, with freshened valve seats, valves and some BC1100 valve springs and ARP head studs. (Stock cams)
B16G, evo8 MAF, 3" custom cold air intake straight to turbo inlet, Turbosmart BOV. (Stock large frontmount intercooler similar to the early evo's)
560 evo8 injectors, re-wired walbro 255, sard FPR set at 44psi base pressure. I run 98 octane pump gas (New Zealand is good like that).
Base timing set at 5 BTDC. Boost leak tested to 25psi leak free. All maintenance and servicing up to date (Filters, timing components etc...)
Am running ECMLINK Full V3
I have a couple of questions.
1/ Are there any glaringly obvious issues with the current setup? This is really just a sense check of the work I have done so far. Airflow and Fuel setup looks good to me but would like a second opinion.
2/ TIMING /ubbthreads/images/graemlins/uhh.gif
My initial approach to timing was to use the conservative evo 8 tables as a starting point. They got me up and running, but at 20psi boost the car felt flat and lifeless throughout the rev range. So I then decided to go back the the stock (1G) timing tables. Due to the aggressive nature of the stock tables I lowered all cells in the table by 2 degrees and took a few more degrees out of the high load areas at 2500 - 3500rpm. I also lowered the boost to 13psi at the same time. This really woke the car up and it felt strong everywhere. Even better than at 20psi with the evo8 timing tables!
As it stands I get very little knock when doing WOT runs as you can see in the logs, but at part/mid throttle I can sometimes get very high counts that will retard timing by up to 10 degrees, this occurs at the 2500-3000 rpm range and Loads of 1.0-1.4. It isn't consistent, sometimes it will drive through these areas with no knock other times it will hit 100 counts and pull almost all the timing. As a test I took 6 degrees of timing out of the timingmaxoct table through the ranges mentioned above and it made no difference to the knock behavior. The confusing part for me is that I can pull from 2000 rpm in 5th all the way to 7k with no knock in the same areas of the timingmaxoct table?! My thoughts are that it is phantom Knock but would like your knowledgeable thoughts.