Blown 4-banger

This a question to the people who tune their own cars. How much timing do you guys run? I'm currently running 25 degrees of timing, but I don't know if adding another degree or 2 will help. Also say your running 25 degrees of timing, when you set your spark map, do you set it to run 25 degrees as soon as possible or do you gradually increase it? I have mine set run 18 degrees from 3500-4500, 20 from 4500-5500, 21 from 5500-5900, then 22 from 5900-6100, 23 from 6100-6400, 24 from 6400-6600 and 25 from 6600-7000.

Blown 4-banger

Bump

Blown 4-banger

Come on people, this forum is for help with tuning...
AND I AIN'T GETTING ANY HELP!!!

06blackg85ss

iTrader: (1)

hold on I"ll post one of the timing maps I ran... but this is my setup with meth.. so if you aren't using that or 100+ octane do not use it.,.

memphisr24

Why do I see 0's? Is that normal/safe? What is the purpose of that? NVM i'm stupid....I had a brain fart

06blackg85ss

iTrader: (1)

also what I have now on pump gas daily driver is just a gm stg II timing map... nice and safe..

memphisr24

wow, only 15 degrees of timing at redline. What a difference

Blown 4-banger

I only 15.5 at 7000 on my pump gas tune, it sucks the cars hate a lot of timing without meth injection or high octane gas

memphisr24

But I noticed some people on here are runing 20+ degrees of timing on pump gas unless they are bsing. Blown4banger, did the heat exchanger and dual pass intercooler end plate make it easier to raise timing?

Blown 4-banger

Not really, for short term yes, but long term I've noticed that it doesn't seem to matter what is done, it will eventually get up to around 160-170 degrees. I made a 20-140 run on the freeway, and it got up to about 165 and just stayed their from like 115-140 without raising anymore, before the dual pass it would just continue to climb, the highest I saw mine was 201 and that was a 20-120 run! I was talking to a guy with water meth and he said the same thing, it would climb and level off at like 160-170. Its wierd.

06blackg85ss

iTrader: (1)

hmm odd.. when I had the water meth it would only get to about 135-140 and drop off immediatly when I let off the gas

memphisr24

Don't forget, blown is in AZ. It's HOT HOT HOT there. But wow, 160-170 and no knock? Jesus, as soon as my car hits 80-85 i get knock.

Blown 4-banger

On a 20 mph to 140 mph run it would only get up to 140? I've talked to like 2 or 3 guys with water meth that said they get up to around 160-170 and stay there. After my 20-140 run it took about 30-45 seconds to drop from 167 to 82 degrees.

06blackg85ss

iTrader: (1)

yeah man,,, I've done top speed runs and only seen a max of @150 degrees... then once I got outta boost it would drop pretty quickly...
but I was also spraying through the blower which cooled that off too in the process... worked pretty damn good to me.

Blown 4-banger

I'm gonna get the CryO2 HE sprayer, intake bulb, and an extra serge tank. Then I MIGHT spray meth after the blower. I just don't like the idea of sprayin **** into the blower, so I'll just use a spacer and spray it just after the blower.

srt-killer

I thought you were going to stay away from the meth.

06blackg85ss

iTrader: (1)

well I know someone just came out with a kit like that... saw it at c/a on friday, but I"ll be sprayin nitrous now, so things will get much cooler... lol.... but as I stated I saw not one single abnormal thing with my s.c after runnin it for almost 10000 miles.... and I was running real meth.. 50/50 with distilled water... (not washer fluid)

06blackg85ss

iTrader: (1)

and mephis... you saw my timing maps for pump gas... and I had no KR.... no bs here..

Blown 4-banger

With meth, so it doesn't count because meth increases the fuel octane.

EDIT* Also unless you have the IAT and ECT adders disabled, you will be running more than 25 degrees of timing. With my adders the timing table says 13 degrees, but after scanning it, the histogram says 15.5-16 degrees. Just a thought, you might have actually been running like 27 or 28 degrees of timing.

06blackg85ss

iTrader: (1)

yeah it was at 25 deg flat across the board at WOT... checked with aeroforce, and logged with hp tuners.... Ill see if I can post a screen shot up tonight of one of those runs

Blown 4-banger

Man its impossible to run 20 psi with 91 octane only. I fought with my car til 2:30 AM last night, and couldn't get the damn thing to stop knocking! I'm running 91 octane ONLY, and even while trying to run 15 degrees of timing it would still get 4-6 degrees of KR. Its just too much boost and heat for such shitty gas. However I was SD tuning last night and WOW huge difference! I'm now running a commanded AFR of 11.8 and my injectors are running at 85% duty cycle. It fells WAY faster, the only problem is the LTFTs are all fucked up at lower rpm, in PE mode it runs like a beast.... that knocks from shitty gas

Ljavy17

Holly crap! I just looked at my tables and im running like 6 degrees of timing at 3800 rpm and only increases to 12 at redline!!!!!!! yeaaaah My car is going ot be muuuuch faster when I get it back. Im gonna put 15 degrees at 7k

bigworm

its interesting that you didnt smooth your tables or "ramp up" to 25degrees. on my 2.4L w/ 91 octane im pushing 24degrees by 6000 by ramping up and running about 13.2 mixtures.

Ljavy17

Where is this commanded AFR we are all talking about. which table is it.

bigworm

give your car what it wants, not what you think it should have... increase by 1-2, test, repeat.

if you just use octane to cover up the problems, you could just set your timing to 50 and wish for the best!