chris'smax

iTrader: (3)

I finally got the car tuned today, but i am concerned about the ratio they went with. The guy that tuned it said he tuned the car to 11.5:1 due to the fact i am still running stock timing. He said once i get my water/alcohol injection or J&S installed then he can lean it out some more. Does this 11.5:1 AFR seem alittle conservative? I am running the 2.87 pulley.


PS This is on 510cc injectors and walboro. I am happy to say that i am now FMUless

Thanks
Chris

SPiG

iTrader: (7)

BTW it is walbro.

Congrats on the car working. Now I want to ride in it and dyno.

SonicDust187

iTrader: (11)

What did you dyno man?

I30tMikeD

iTrader: (8)

Not at all. 11.5 is perfect IMO unless your trying to tune on the edge. I would say 11.5 is about the optimal that most boosted cars shoot for.

When I tuned I saw no hardly any power difference from a 11.5-12.0 ARF to a 10.0-10.5 AFR. It was within 2hp of each other

chris'smax

iTrader: (3)

Thanks that what i was looking for. They tuned it by driving on the roads since the dyno i booked up for the week. Hopefully next monday i am going to see what kinda power i can put down

chris'smax

iTrader: (3)

Suck it bish, no ride for you spelling teacher

I30tMikeD

iTrader: (8)

Good, that is the best way to tune a car.

h2kFrosty

iTrader: (3)

The question is..... do you think you can get a 13 now with your heavy *** wheels? Or is the snowmobile still leaps and bounds faster. :P

chris'smax

iTrader: (3)

Technically the snow mobile isn't $hit since it has been in houma all in pieces for about a year now .

Next time we go to the track i am going to have some lighter wheels and hopefully slicks

Blu

iTrader: (63)

Once you get the timing situation worked out you can lean it out a little bit. On the low end you can lean it out quite a bit until it starts building significant boost. I'd say 12.5ish until 5-6psi and slowly bring it down to 11.8-12.0 at peak boost. Tuning a turbo car is a little different, but since you are SC there is room to play since you dont have to worry about boost spikes etc...

chris'smax

iTrader: (3)

Should i still worry about detonation even with a 11.5:1 AFR since i am still running stock timming?

Blu

iTrader: (63)

I would worry about it a little at peak but everything below 7-8psi should be ok at that a/f tune. I would however get some form of timing control especially boosting with the 2.87. Just make sure you develope an ear for detonation so if it happens you can get your foot out of it. Just keep as high of octane gas as you can get in it and it should be ok.

chris'smax

iTrader: (3)

93 octane would do it? I wanted to get the J&S but the mechanic said he doesn't like devices that pull timing based on detonation. He said he likes J&S but he said it isn't ideal since it may be to late after a detonation. Also what would be a good octane booster to use for daily driving until i get the water alchol kit installed?

Blu

iTrader: (63)

J&S is ideal considering the power output not being as extreme as some other cars that would blow as the first sign of detonation. It has worked for mardigras for a couple years and hes been making 400+fwhp for some time on a stock motor and its still running strong. I plan to get it on top of the JWT tune soon. Octane booster is a joke, if your going to spend $7-8 for that junk just buy a couple gallons of race gas per fillup. That should raise the octane rating up a few points depending on the rating of race gas.

chris'smax

iTrader: (3)

Ha i deffinetly wasn't talking about that octane booster $hit, just any other options available. I agree i think J&S is far superior to the emanage timing harness since you can't even measure the timming with the emanage.

BTW can you only get race gas at the race track or can you get it somewhere else

Blu

iTrader: (63)

Im not sure about your area but local here in Charlotte there are a few Citgo stations that have 100 octane at the pump. The last time I got it it was $4.79 a gallon though . It sucked to only get a little over 6 gallons for $30.

SPiG

iTrader: (7)

There is the toulene option. 114 octane for like $5/gallon from paint stores. It is in the stickies.

LatinMax

iTrader: (1)

Ummmm...I though I was the one that said that to you. Just messing with you. Glad it's running fine.

chris'smax

iTrader: (3)

Actually he told me before i talked to you

96sleeper

iTrader: (4)

$4.79 a gallon is cheaper than regular gas in France, Germany, and Great Britain. Sounds like a deal to me, we are spoiled.

Blu

iTrader: (63)

If gas ever skyrocketed to $4.79 for regular here I would be riding the huffy 20 miles to work every morning...