Cat deletes and BBK shortys

[jonathanmoguel]

i recently installed the 1 3/4 BBK shorty headers with the JBA Offroad midpipes(catless)and sounds beastly and goes really well with the SLP Loudmouth 2 axlebacks!


just some questions that i would like to get answered.

is the TQ moved up higher in the powerband?
it seems like its smoother, or slower at low rpms, but i look at the speedo and it picks up mph at a faster rate..

and

do i need a tune to get the best out of this setup?
i went with shortys because i live in cali so i can just swap the offroad pipes and but the stock cats back on. i got a friend that can pass me on the smog and the shortys were bought at a low!! low! price. so i couldnt pass them up..
thanks for the replies

[jonathanmoguel]

So im guessing no one has ant comments thoughts? :(

[NoWhereMan]

I would tune, Optomize those mods you have. Im curious to see what you get, I just did cat deletes and my dyno came close to people with long tubes. Wonder if shortys provide anything. I was hesitant on the purchase. Planning to use the money towards a vvt cam.

[partymn]

Yes, decreasing back pressure with larger pipes or removal of cats will cause your torque curve to move up in RPMS.

Yes, a tune with any modification will help to get the most out of the mod.

Now get you a CAI, tune, and move out of California and you will be on the right track to make some good power numbers.

[Denis]

Yea. You're gonna move the torque higher in the range. And yea, tune that sucker!

[litle88]

I don't think your gaining that much with your mods to be honest with you. A tune will help a Lil bit. But if you are willing to tune why didn't you get the Lt's for some real gains!

[jonathanmoguel]

Originally Posted by litle88

I don't think your gaining that much with your mods to be honest with you. A tune will help a Lil bit. But if you are willing to tune why didn't you get the Lt's for some real gains!

The shorties i got where a good deal price wise.304 stainless for $200. The cat deletes where on ebay for 130 also a good deal. I figured that if i where able to lose that hook up i have at the smog shop, i can still at least swap to the original cats and pass smog.

Thnx for the input

[jonathanmoguel]

I guess i"ll tune the sucker.. It certainly feels alot faster in terms of how the mph climbs lol.when i go WOT in second going into third, its alot faster too ..

Im going to Irwindale Speedway this thursday. Hopefully my time goes lower.. Ill keep yall posted!

[jonathanmoguel]

Originally Posted by NoWhereMan

I would tune, Optomize those mods you have. Im curious to see what you get, I just did cat deletes and my dyno came close to people with long tubes. Wonder if shortys provide anything. I was hesitant on the purchase. Planning to use the money towards a vvt cam.

How much did u dyno? With x-pipe, volant intake and slp2 axlebacks i got 400whp and 395 tq.. stock tune..


(i kinda tripped out with those numbers! )

I know it has a stock tune because the governor kicked in and my cel light is on with the cat deletes

I wonder how much more hp it will be with shorties and cat deletes!

[litle88]

Originally Posted by jonathanmoguel

How much did u dyno? With x-pipe, volant intake and slp2 axlebacks i got 400whp and 395 tq.. stock tune..


(i kinda tripped out with those numbers! )

I know it has a stock tune because the governor kicked in and my cel light is on with the cat deletes

I wonder how much more hp it will be with shorties and cat deletes!

You got 400hp on a dyno stock?

[jonathanmoguel]

Originally Posted by litle88

You got 400hp on a dyno stock?

Yah i am surprised myself! I think maybe not sure tho, it was because i had all the fluid changes before the dyno run ..diff oil change, trans change ,and oil change. The dyno run was done on a dyno day so a bunch of other cars went before me.. I was on right after a mustang it put out 260 whp so i dont know if all those cars that got on before me messed up the calibration or something.. There was a 11 camaro with a similar setup. muffler deletes, a cold air induction intake, and was a manual trans like mine. He put out 388whp so a 10 hp diffrence !? You think its too far off to be a miscalculation or the car is a factory freak? Ill tell u this though on the street i beat 13 mustangs by a car and a half, (friend of mine) with intake and a tune!
So idk about my car!

[NoWhereMan]

Originally Posted by jonathanmoguel

How much did u dyno? With x-pipe, volant intake and slp2 axlebacks i got 400whp and 395 tq.. stock tune..


(i kinda tripped out with those numbers! )

I know it has a stock tune because the governor kicked in and my cel light is on with the cat deletes

I wonder how much more hp it will be with shorties and cat deletes!

I have an l99 and came out with 354/376. I was comparing on the l99 dyno thread and I was withing 5-10 hp/tq.

[jonathanmoguel]

Originally Posted by NoWhereMan

I have an l99 and came out with 354/376. I was comparing on the l99 dyno thread and I was withing 5-10 hp/tq.

Those are big gains for an auto!