Well I always hear about tuning your car after turbo or super or nitrous. I told my mustang buddy about getting a turbo kit for my car and he proceded to tell me I would have to tune it ALL THE TIME and wouldnt want it for my daily driver blah blah blah. well after rolling my eyes I started to wonder what tuning involves.

So what exactly does this tuning include? Do i get colder plugs, gap different, adjust afr adjust fuel pressure???

Please shed some light on this for me so I can know if Id be getting in over my head with a turbo.

 

not so true, they do not require constant tuning, get it set right, and ride.. unless you go changing stuff (injectors, turbo, etc)Adjusting fuel delivery can be great though, I have gained up to 90hp just bc of dyno tuning.

you do not even have to run fuel computers or anything unless you go adding something like big injectors, etc.

I have run both with and without fuel computers, presently I have no safc or anything electronic on the car and still get a dyno a/f of close to 12.5

hope this helps you somewhat?

 

Yep. so far so good. Well thats good news that i can tune it and if i dont change anything I can ride for a while. i just cant lose my daily driver.

But still do i have to have a dyno to tune?

 

I understand that this isnt something you can answer in 1 0r 2 paragraphs so if yall know of any web sites I can learn since im a fi noob. Thanks

 

u don't HAVE to dyno the car to tune it right, but if you want the air fuel ratio exact and the tuning to be correct, then dyno is the only way to go.

some members tune their cars by reading the EGT and other gauges and tune the adjustable fuel pressure at WOT runs to figure out a exact range of how the car is running.

 

no you do not... a good a/f gauge (greddy,etc NOT autometer) will be as good or even better than dyno a/f... if you had that along with an egt gauge, yeah you could definately skip the dyno.

just hard to tune while flooring it(without a printout of a/f at each rpm) (unless you're in a stock civic or something)

 

So what is the perfect A/F Ratio for a SC'ed Maxima anyway?

I've heard everything from 11.5:1 to 14.7:1....that's a big gap!

IanS

 

don't take my word for it, but I believe its 12:5:1

 

Well, what Hal said is true. Unless you change something, you don't really need to tune. Mine is my daily driver. Unfortunately, my office has moved to be just 5 miles away compared to 25 before. Still that's 20 1/4 miles . Traffic sucks though ....

oh back to the point Mine has been running like a champ. For people worried about A/F stuff, for performance you run 12.5 for economy about 14.7 or so. When cruising, you're off boost and in closed loop mode so still get good mileage. When on boost WOT, it's about 12.X:1. Mine sees a lot of boost a lot of the time so my gas mileage has sucked recently. I think turbos make your right foot get heavier . Oh well!

 

Hmm...as soon as I get my car running again, I'll do some tuning with the AFC and EGT....

Right now I hit at full boost 12.5-1300 farenheight.

What's the highest I can go and still be in safe range?

 

Dyno tune, don't EGT and A/F tune! ... especially if you have autometer stuff! kabooom!

 

I personally don't like to go above 800C... that's when my A'PEXi warning light comes on. 800 C can be easily achieved by boosting up hill... boosting for a long period, getting off the gas for a split second, then going WOT again... etc.

800 C = 1472 F

 

Autometer EGT's suck too!?!?!?

I don't have an A/F guage, and I'm already tuned to 12.1:1...if I make any changes on the AFC, they will be very minimal (not over 3-4%)

IanS

 

I myself let off @ 800 degrees Celcius. The good thing is that I have not seen 800 in a long time. Probably cause I loosen the belt and only been boosting 8 PSI and not 10PSI. Keep it below 1421 F' like he just said.