zapp168

iTrader: (7)

I knew this would happen, but not sure why this happens? My car as an example, M6 4:10's. First gear, I get NO boost, Second gear I get 5 PSI then it stops. Third gear and up I get 8 PSI. What is actually happening to cause this?

MY99TAWS6

iTrader: (3)

I think it can't stay in gear long enough. Too fast thru the gears. Most turbo cars I hear like 3.42 and maybe even less.Would think 3.73 is about highest person would want to go with turbo car.

Frost

iTrader: (45)

Need more load to spool that thing.... Wrap ALL of your exhaust from header to turbo, that will help a bit but ya need a numerically lower gear.

zapp168

iTrader: (7)

The exhaust is wrapped, So it goes through the gear so fast that the turbo has no time to spool up? That would seem to make sense.

MY99TAWS6

iTrader: (3)

Yep thats about right I think. I plan on 3.50 I think in my 9 inch ford rear end. I wonder how bad 3.73 would be also as off boost the 3.73 is nice.Course since going to a 408 or 427 over the 346 less gear will likely be more than fine as torque goes up in a bigger motor.

For you though think 3.73 or 3.42 would be best.

zapp168

iTrader: (7)

I think I am going to run 3:73 as I like the around town driveability.

crazyfokker

iTrader: (2)

I would go with a higher gear than that, like a 3:23. If your blowing through boost that quick, going from a 4:10 to a 3:73 your not going to tell a big difference.

JAvenger007

iTrader: (9)

3.23, 2.73, or 3.42 for the win

zapp168

iTrader: (7)

What are you running?

Zombie

iTrader: (2)

3.42s will give you the best street drivability and boost response on a 6spd car. If you ever go auto, go 2.7x if you like driving on the highway.

ChevyNo1

I'm running a 3.50 gear in my 9", works great

Pro Stock John

iTrader: (34)

Where do you shift at zapp, 6400?

99.9percenter

iTrader: (2)

Spool it up before you let out the clutch.

JAvenger007

iTrader: (9)

the stock 3.42s

coop5885

iTrader: (2)

i have a set of 2.73 with mine. i can footbrake 10+lbs so it leaves good. 1.56 60' is not all that great. Im gonna go with a 3.23 or a 3.55 in a 9inch later this year.

RW99

I really like my 3.50 in the 9". I run a small (T67) front mount, but it's fully spooled at 3000 rpm with 500 rwhp... very fun yet easy on the street.

Slowhawk

iTrader: (12)

3.42 would be better. 8lbs? no wonder it is loading up when it was tuned off 4-5lbs.

zapp168

iTrader: (7)

Yes I am shifting about 6400. I am getting ragged about my driving, but the car just seemed better to drive before the turbo. Considering removing it.

zapp168

iTrader: (7)

You offered to "correct" my tune Via internet, I asked what to log, you "didn't have the hour to answer my question", when all I wanted was a PID list, the guy from CARTEK took 5 minutes and told me what to log for car performance (THANK YOU WS6Transam01).
I know we tuned the car for 4 PSI, but there are issues with the car! It was faster around town before the tune, and Now the car bucks at 1500 RPM so bad that I have to put in the clutch, I am getting about 13MPG shooting 1 foot flames out the tailpipe on decel, and it falls on it's face at 3500 RPM's. Ya I will take blame for SOME driver error, but other people have driven the car and in the car have asked where the low end went. I have mentioned there are issues, but you kinda ignore it. So I guess I can come down on dyno day and pay more money and ask you again pretty please to take a look at this. If it is the car fine, I will fix it, but I am getting tired of running in circles.