Agree, that's a very extreme drop in timing.

 

honestly, ive had no problem like that, i set my knock light to see cruise knock. I have since smoothed it out a little, but it wasnt that big of a drop with my old cams, and old intake manifold. This new setup takes sooooo little timing, that I barely feel alright with it! I have to keep just pulling timing from the spool up areas until i get here. this S2 cams, + skunk 2 manifold seems to make a ton of airflow. Im still learning with barely over a year since flashing my own car for the first time. tips? i feel the map is smooth for all but what you pointed out. some blockage going on in the top end, but i really havent made it that far, seems like it will need some taken out, depends how this BCS holds boost I suppose?

 

you hit 310 load at 15 psi ? isn't that too high ?

I hit 270-280 load at same psi on my 2.3 but with stock cams and intake. thought I had boost leak somewhere cuz the load seemed too high for 15 psi.
any suggestions ?

 

He said he hits 200-220 load. Never mentionned 310.

 

On sd you control load kpa.. 32 psi that i hit this morning is 370 load

 

what 2byte to 1byte load factor are you using?

 

1.5

Ps. Roadspike thank you for sd, my s2 cams idle at 750 silky smooth much nicer than i could achieve with maf

Ive since updated some timing after hearing your guys thoughts

 

shouldnt 32 psi be closer to 320 load? Im assuming you leave the kpa-load table with the last entry being higher on the right than the left?

 

Thanks for the response. I hadn't thought about looking at the Mivec Map. I'll post it up here and see what you all think.

 

thats why his load is so high. most people at that power level are on 1.3x

 

2 byte to 1 byte factor will not change his load reading as long as it's set to the same in evoscan.
in his case running sd load isn't a real reading of airflow, it's all a matter of kpa to load scaling. you can make 40psi read 200 load or 20psi read 400 load.

 

Load is dependent upon many different factors. I would simply use it as a tuning reference. Sure some will be consistent, but all and all you datalog and use the load/rpm axis to tune a given load cell. It could say 10K at 1000rpm and as long as it was consistent you could tune it.

There are guys that hit 450-500+ load at 30psi (no maf screen). I hit around 320 at 28psi.

 

I thought his rom was 1.2x and evoscan was 1.5x from something else he said, might have been in the als thread can't recall. But yep if theyre both the same wont matter.

 

Im using the sd rom how roadspike had it set up

Im getting light acceleration knock now that ive changed the low end of the map. Need to revert!

With bigger cams and a big intake manifold you would typically see less timing in the entire map right?

 

Can you guys give me an opinion on this timing map I just finished adjusting prior to loading it to the car. Background story for the new map:

I had gone to a dyno day last month and logged the car during the pulls. I had done a few logs here and there, but with the warranty about up (thank you c****x) I felt it was time to actually start learning and analyze the data from the logs. Plus.... I had just installed a MAF adapter w/ a Perrin filter and wanted to see what affects it had on the car since they say it can be run w/o altering the tune (which I now know isn't entirely accurate and I have since went back to the stock air box until I can get a logable wideband, prosport atm).

During the pulls the car was knocking above 7k. Not that I go over 7k much, if at all, during my trips to the track. The first pull had 4 counts from 7300 - 7500. The second pull had 8-9 counts from 6900 - 7500. Pull 3 had 6-7 counts from 7000 - 7500. With the filter the boost also increased from 5000 on, spiked 23psi then creeped to 24psi and tapered to rev limit. So I knew I had to richen up the fuel map up top.

What I did not realize is the amount of timing up top. In the previous map it was running 12*-14* of timing, which IMO is a little agressive for a "safe road course tune."

Thank you for your opinions.