[gmanxpress]

Originally Posted by 2000form

and 6th gear is 1:1.

Not on the 10 speed...

[2000form]

ok, forgot about that.

[ssrallyred]

Originally Posted by Victoryred1le

if you ever plan on making more than 650 wheel, do the 2" it does not give up nearly the power/torque that were used to seeing on older LS stuff. the 2" fit absolutely perfectly and you have room to grow into the airflow. seems foolish not to.

According to the Kook's rep I spoke to the 2" isn't really needed until the car is around 1000 rwhp.

[PRAY]

I have been running 2" on my car since I went with headers. I only saw gains from bottom to top. No ill effect even on a bolt on car. Seems to run pretty well.

[swizlstik]

Nice! I’ll be doing some similar mods to mine next week. Going with:

Kooks 1-7/8 headers catless
Roto-Fab cai
18% OD pulley
ATI damper
E85

Hoping my gains are a lot like yours.

[Victoryred1le]

Originally Posted by 2000form

ok, forgot about that.

7th is 1:1 on the A10

[Victoryred1le]

Originally Posted by ssrallyred

According to the Kook's rep I spoke to the 2" isn't really needed until the car is around 1000 rwhp.

I've always gone 1-7/8's but my numbers speak for themselves. the car runs flawless and i love the sound. this is my first time using ARH instead of Kooks and i really am happy with them.

Originally Posted by PRAY

I have been running 2" on my car since I went with headers. I only saw gains from bottom to top. No ill effect even on a bolt on car. Seems to run pretty well.

yep, no reason not too.

Originally Posted by swizlstik

Nice! I’ll be doing some similar mods to mine next week. Going with:

Kooks 1-7/8 headers catless
Roto-Fab cai
18% OD pulley
ATI damper
E85

Hoping my gains are a lot like yours.

it should make a little more with flex fuel for sure! that's everything i have just the 2" ARH and i'm on 93.

[swizlstik]

Originally Posted by mlee

There never has been much if any difference in power between the two. You loose boost with headers and 2" would be a tad more lost. Also, a very tight fit with 2".

My question is why keep cats at all aside from the legal inspection issue.

After blowing a set of high flow cats out, I’ll never have them again.

[mlee]

Originally Posted by swizlstik

After blowing a set of high flow cats out, I’ll never have them again.

Same here...

I blew mine out as well and one got jammed in the x-pipe. Temps got really high on the track until we figured it out.

[Victoryred1le]

Originally Posted by mlee

Same here...

I blew mine out as well and one got jammed in the x-pipe. Temps got really high on the track until we figured it out.

Same happened to me with my 2014 E63S, got clogged and ended up being an ordeal. Now on my 16' AMG GTS, its catless now too.

[dlct3]

Originally Posted by swizlstik

Nice! I’ll be doing some similar mods to mine next week. Going with:

Kooks 1-7/8 headers catless
Roto-Fab cai
18% OD pulley
ATI damper
E85

Hoping my gains are a lot like yours.

Any update on the build results? TIA

[swizlstik]

Originally Posted by dlct3

Any update on the build results? TIA

Woke this thing up! Torque really came alive.

[laynlo15]

Great hp/torque so get it to the track for some passes. That will let you know if numbers are real. Mine made almost exactly the same numbers and mine I went 10.33@135. You won't hook it without some drag radials or slicks. Should be good to go and with minimal mods seems like a great deal.

[Blackdevil77]

I'm guessing red is on 93 and green is with E85?