Tuning HKS 280's
 

I have installed HKS 280 cams today and had a 2 questions about tunning for them.

1. My car will run much leaner correct? I am getting 12.1-12.2 all the way to red line using my old map.

2. I added fuel on the 0% column for 750,1000,1250,1500 rpms. It goes from +10,+8,+4,+2. I noticed it helped idle quite a bit. Car runs fine at 850 rpms idle. Anything else needed to improve idle a bit more?


I have the following mods:

2003 Evolution

Megan Headers
Full 3" turbo back exhaust
Walbro 255 fuel pump
K&N drop in filter
Halman MBC set at 22psi
HKS 280 in/ex cams (stock cam gears)
Upper IC and Lower IC piping

I will be getting a APS cold air intake and Alcohol Injection kit this week. I fully tune the car once I get that stuff installed.

If someone with similar mods can just post your map that would really help me out {thumbup} I know that all cars are different etc.. I just want a good timing curve to follow.

I was going to pay to have my car tuned but after playing around with UTEC I am actually starting to make progress!!

I'd defiantely richen it up to 11.2-11.3. Basically the name of the game is to keep the short-term fuel trims as close to zero as possible. Play around with the idle speed if fuel alone doesn't help.

Added a little bit more fuel and got the AFR down a bit. I am just using UTEC for the AFR at the moment. I can't wait to play with timing!! This thing pulls harcore now!!! I love it.

Do you think I could up the rev limiter up to 8k on the stock retainers and valve springs?

7.5k would be good enough.

Here is my fuel map. Please let me know if you think anything looks odd in there. I got steddy low 11's afr on that map. I will play with timing tomorrow :)

Fuel Map
[0] [0] [0] [0] [0] [0] [0] [0] [0] [0] [0]
[0] [0] [0] [0] [0] [0] [0] [0] [0] [0] [0]
[0] [0] [0] [0] [0] [0] [0] [0] [0] [0] [0]
[10] [5] [5] [3] [3] [3] [3] [3] [3] [3] [3]
[8] [-2] [-2] [-1] [-1] [-1] [-1] [-1] [-1] [-1] [-1]
[4] [-3] [-3] [-1] [-1] [-1] [-1] [-1] [-1] [-1] [-1]
[2] [-3] [-3] [-1] [-1] [-1] [-1] [-1] [-1] [-1] [-1]
[0] [-3] [-3] [-1] [-1] [-1] [-1] [-1] [-1] [-1] [-1]
[-2] [-3] [-3] [-1] [-1] [-1] [-1] [-1] [-1] [-1] [-1]
[-4] [0] [-1] [1] [1] [1] [1] [1] [1] [1] [1]
[-4] [0] [-1] [1] [1] [1] [1] [1] [1] [1] [1]
[-4] [-1] [-1] [1] [1] [1] [1] [1] [1] [1] [1]
[-4] [-1] [-1] [1] [1] [1] [1] [1] [1] [1] [1]
[-4] [-1] [-1] [2] [2] [2] [3] [3] [3] [3] [3]
[0] [-1] [-1] [3] [3] [3] [3] [3] [3] [3] [3]
[0] [-1] [-1] [3] [3] [3] [3] [3] [3] [3] [3]
[0] [1] [0] [3] [3] [3] [3] [3] [2] [2] [2]
[0] [-1] [3] [3] [3] [3] [3] [3] [3] [3] [3]
[0] [1] [0] [3] [3] [3] [3] [3] [2] [2] [2]
[0] [2] [1] [2] [2] [2] [2] [1] [1] [1] [1]
[0] [-1] [-1] [-1] [-1] [-1] [-1] [-1] [-1] [-1] [-1]
[0] [-1] [-1] [-1] [-1] [-1] [-1] [-1] [-1] [-1] [-1]
[0] [-3] [-3] [-3] [-3] [-3] [-3] [-3] [-3] [-3] [-3]
[0] [-3] [-3] [-3] [-3] [-3] [-3] [-3] [-3] [-3] [-3]
[0] [-4] [-4] [-4] [-4] [-4] [-4] [-4] [-4] [-4] [-4]
[0] [-4] [-4] [-4] [-4] [-4] [-4] [-4] [-4] [-4] [-4]
[0] [-4] [-4] [-4] [-4] [-4] [-4] [-4] [-4] [-4] [-4]
[0] [-4] [-4] [-4] [-4] [-4] [-4] [-4] [-4] [-4] [-4]
[0] [-4] [-4] [-4] [-4] [-4] [-4] [-4] [-4] [-4] [-4]
[0] [-3] [-3] [-3] [-3] [-3] [-3] [-3] [-3] [-3] [-3]
[0] [-3] [-3] [-3] [-3] [-3] [-3] [-3] [-3] [-3] [-3]
[0] [-2] [-2] [-2] [-2] [-2] [-2] [-2] [-2] [-2] [-2]
[0] [-2] [-2] [-2] [-2] [-2] [-2] [-2] [-2] [-2] [-2]
[0] [0] [0] [0] [0] [0] [0] [0] [0] [0] [0]
[0] [0] [0] [0] [0] [0] [0] [0] [0] [0] [0]
[0] [0] [0] [0] [0] [0] [0] [0] [0] [0] [0]
[0] [0] [0] [0] [0] [0] [0] [0] [0] [0] [0]
[0] [0] [0] [0] [0] [0] [0] [0] [0] [0] [0]
[0] [0] [0] [0] [0] [0] [0] [0] [0] [0] [0]
[0] [0] [0] [0] [0] [0] [0] [0] [0] [0] [0]

Definately looks different from mine. I'm positive in the teens or 20's everywhere. Not saying it's wrong, just different. Could be from the walbro overpowering the fpr. Post up the timing map and some logs.

are you running a aftermarket intake? my understanding is i will need to start adding fuel once i get the CAI. I am leaving timing to the stock ECU for now. Was just playing around with AFR and the cams to see how it performed. Hopefully my other stuff will get here tomorrow.

i run a buschur filter only. I've also seen these high fuel numbers on a stock airbox aswell so i don't think it's just me. Go ahead and post up the log anyway. I want to see your afr and timing from the ecu.

How do you like those 280s and how's the idle?

the idle is good for me... its lopey but it sounds mean :)

here is a 3rd gear pull. I am running about 21-22psi. I am still a bit lean is there anything else i should do?

3303 25.3 612 100 10 0 12.6 27.4 ECU. 6 100 564
3390 25.3 716 100 10 0 12.8 33.3 ECU. 6 100 850
3479 25.3 874 100 10 0 12.6 39.7 ECU. 6 100 769
3512 25.3 797 100 20 0 12.8 53.1 5.4 6 100 1262
3753 25.3 1075 100 30 0 11.1 53.8 5.4 6 100 1237
3907 25.3 1089 100 30 0 11.6 54.7 5.5 6 100 1116
4060 25.1 1111 100 40 0 11.9 56.7 6 6 100 1412
4208 25.1 1213 100 50 0 11.7 61.2 6.6 6 100 1250
4357 25.1 1237 100 50 0 11.6 62.7 7 6 100 1445
4510 25.3 1308 100 50 0 11.6 65.9 7.3 6 100 1428
4662 25.3 1272 100 60 0 11.4 64.2 7.8 6 100 1282
4830 25.3 1302 100 60 0 11.7 67.9 8.2 6 100 1479
4945 25.3 1377 100 60 0 11.6 69.8 8.4 6 100 1572
5104 25.1 1432 100 70 0 11.5 73 9.4 6.1 100 1677
5265 25.3 1449 100 70 0 11.4 72.9 10 6 100 1453
5411 25.3 1461 100 70 0 11.5 74.2 10.4 6 100 1602
5564 25.3 1543 100 70 0 11.4 76.8 10.8 6 100 1689
5698 25.3 1552 100 80 0 11.3 78 11.4 6 100 1644
5847 24.9 1592 100 80 0 11.3 79.1 11.9 6 100 1760
5973 25.1 1592 100 80 0 11.3 78.9 12.4 6 100 1773
6105 25.3 1612 100 80 0 11.3 80 13 6 100 1623
6253 25.3 1666 100 90 0 11.3 82.2 13.5 6 100 1785
6397 25.3 1666 100 90 0 11.2 83.3 13.8 6 100 1633
6523 25.1 1694 100 90 0 11.2 80.9 14.1 6 100 1644
6600 25.1 1706 100 90 0 11.5 82.3 15.2 6 100 1736
6747 25.1 1712 100 90 0 11.5 82.4 16.4 6 100 1748
6858 25.3 1706 100 100 0 11.4 82.9 17.3 6 100 1811
6988 25.1 1748 100 100 0 11.3 82.8 18.8 6 100 1838
7107 25.1 1730 100 100 0 11.4 83.5 19 6 100 1760
7215 25.1 1773 100 100 0 11.5 85.4 19.3 6 100 1811
7326 24.9 1785 100 100 0 11.3 86.1 19.3 6 100 1851
7407 25.1 1811 100 100 0 11.5 87.4 19.1 6 100 1893
7575 24.9 1805 100 100 0 11.3 87.6 19 6 100 1923

timing on the top end looks good. Could bump up the timing around 3500 or so to about 7 degrees? Just clean up the afr and you're pretty much set.

You on the stock turbo and when does the cams "kick in" I guess you could say, i've been considering 280s with Utec so i'm just trying to get some perspective, sorry for being offtopic :p

The 280's seem to kick in right around 4k rpm. The car just screams up to the redline without any power loss. Feels great and I don't know why people complain about the idle. Once I get all my parts installed and my tune dialed in I will dyno it.