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Discussion Starter · #1 ·
Hey Guys!
Have a 2016 ST3. Currently I have run a best of 14.097 with the Cobb 93 flash and 245 ET Streets. Looking to be dipping into the mid 13s for next year.
I have a Cobb RMM to install
Plans:
-Different 17in wheels because the 245/40/18 ET Streets dont offer much of a side wall (saw 2.074 60 foot)
-move to a Hoosier 17in drag radial or would consider the MH 26in slick but I feel like thats too tall
-Custom tune! I feel like this is necessary to be able to use launch control properly as the stock Cobb 2500 LC is useless for me. Unsure as to who to use yet looking for suggestions... mainly looked at Freek and Stratified
-Intercooler...charge temps speak for themselves
Anything else I should be looking into?
How are your guys stock clutches holding up when using slicks/DRs?
thanks
Colby
 

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Slicks will be your best investment, start there.

Last several passes

1.81 60' [email protected]*
1.81 60' [email protected]*
1.96 60' [email protected] #Wastegate Adjustment
1.79 60' [email protected] **Shifting 3-4 @5500-5800 rpm
1.83 60' [email protected]
1.84 60' [email protected]+
1.77 60' [email protected]+
1.76 60' [email protected]*

*Heat Soaked = Coolant Temps over 210 degrees, timing pulled 9-10 degrees from max of 26 degrees

+ Water-Meth injection (50/50)

#Wastegate Adjustment

Gained 1.7 mph with full timing (26 degrees advanced). This is at max pre-load as suggested in the link above. There's more to be had in this area

Here's what I suggest -

Contact Bryan @JST. They actively drag race both of their Focus ST's. He also knows what setting to give you for the Launch Control/2 Step since he's running the same slicks that I do.

Moving to a blended ethanol tune will give you a much more aggressive timing map. If you don't have ethanol near you, consider a water-methanol system. Tuned it will have identical results compared to ethanol blends and likely improve beyond that.

Do Sistomper's coolant mod -

Remove 1/2 gallon of coolant from the cooling system and replace it with pure distilled or soft water (if available). This will keep the car's coolant temps under 210 degrees which is the point where it will start to pull timing.

Do the low cost changes first.
 

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Discussion Starter · #3 ·
Those are awesome times man! How does the stock clutch like pulling those 60 foot times?
 

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Those are awesome times man! How does the stock clutch like pulling those 60 foot times?
Clutch likes it just fine, no need to be concerned with additional wear. Slipping the clutch like people do around here on street tires causes more wear.

On your M/T ET's I would start launch RPM around 4,000 rpm, release the clutch and roll into the throttle. The problem with Cobb AP's is without their software you can't change these settings, only your tuner can and you only have five slots.

This is ideology - Cobb's roots are based in auto cross and road racing there's not much need for instant adjustment like that. SCT's roots are drag racing, of course a driver needs to able to change his settings track-side as track conditions change.

Suspension tuning will be needed more with drag radials than with slicks. Matt Trout aka [email protected]/Silver_Shooter ran air bags in his rear springs and he said it improved his traction on Hoosier DOT Drag Radials, with the best being 60' 1.84 with much more power than we're dealing with.

Getting down much further than that will take much more work on your end, at least until I get some drag radials to run NMCA events here.

There is a device(s) that will help launch the car more smoothly which is really needed with drag radials, PM me.
 
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