350 Mani w/o Lts?

Starting to think about my wants for this car. I really enjoy the quietness of just my axle backs and don't really want wall the racket that I had on my last S550 with catless LTs.
Thinking of adding a 350 mani w stock TB, going up to 3.55s from my 3.15s and adding a nice stall. Should make it a nice mid / high 11sec car on drag radials. Car is currently Lund FF tuned with a JLT and axle backs.

The only other thing would be to get rid of the restrictions after the cats . Right side crimped pipe and factory connect .

GSLSE20B said:

The only other thing would be to get rid of the restrictions after the cats . Right side crimped pipe and factory connect .

Click to expand...

That along with a nice H pipe... I just cant do catless anymore. Thanks for the suggestion.

I'm doing one on my car. Will be with stock cats, res delete and pypes pro street touring AB

BMR Tech said:

I'm doing one on my car. Will be with stock cats, res delete and pypes pro street touring AB

Click to expand...

Did you buy another S550? Daily?

Yes sir. I started a thread on it in the members build section. Keep an eye on it. ;)

BMR Tech said:

Yes sir. I started a thread on it in the members build section. Keep an eye on it. ;)

Click to expand...

I have that axel-back but I did not like the sound of it mated with the H pipe. What are u deleting the res with?

I'm running the GT350 IM, stock TB, with a solo street race catback. I have no headers. Auto with 3.55's.

Made 426rwhp at Hypermotive's dyno day. Won't be heading to the track until maybe later this month or next. Not sure what it will do on street tires.

How does it drive on the street? Do you still have plenty of low end with that manifold? I'm currently torn between longtubes or GT350 manifold as my next mod.

Zodiac said:

I'm running the GT350 IM, stock TB, with a solo street race catback. I have no headers. Auto with 3.55's.

Made 426rwhp at Hypermotive's dyno day. Won't be heading to the track until maybe later this month or next. Not sure what it will do on street tires.

Click to expand...

Nice numbers. Do you have a tune or CAI? Im planning to do a 350IM, Lund tune, 3:55, PMAS CAI.

JFox86 said:

How does it drive on the street? Do you still have plenty of low end with that manifold? I'm currently torn between longtubes or GT350 manifold as my next mod.

Click to expand...

It drives fine on the street, down low is no different than stock. Going from 4k + it just goes and goes. I went through the same debate as you. I chose the IM because I loved what the Boss 302 IM did for me with my 13 GT. I may get headers down the road but I'm happy now.

2015Etrac said:

Nice numbers. Do you have a tune or CAI? Im planning to do a 350IM, Lund tune, 3:55, PMAS CAI.

Click to expand...

Yeah you need a tune for the 350IM.

I have a Roush CAI and Lund 93 tune.

I did cat delete pipes with high flow cats installed and made 430+whp on 93 and 454whp on e85. Sound was very reasonable with the MBRP street h-pipe cat back. Check my sig for mods. Have not retested with the long tubes yet but it is a bit louder. Not for everyone.