Hey! nice work James. I really like that setup, looks fantastic. hmmm, come to think of it, my old 67ImpalaSS has turned down tips at the bumper, bet no one remembers the old walker super turbo mufflers

 

Thanks! It isn't shiney but it's working well. I finished up the other side over the weekend. Took a lot of tweaking to get them perfectly symmetrical.
Take a look and a listen:
https://www.performancetrucks.net/fo...d.php?t=360510
I am still anxious to see what you decide to do with the exits.

 

turned out awesome James

Very quiet system indeed I noticed your shifting about 5500rpms, stock cam?

 

use these tips next time
http://www.magnaflow.com/02product/s...ne=main&id=677

edit: nevermind they only make them in a 2.25''.

 

Grippy - Love how the exhaust turned out! Oxidizer does great work!

 

Yes. And that's already overspinning the tiny 1.6L Whipple by 10%. I need a bigger one. I had a cam once but couldn't tune for it so took it back out. With TunerCATs now available, no problem.

 

awesome, you looking to re-install that Cam anytime soon?

Little Update: Looks like we will get back under the truck next weekend with the goal of re-routing the exhaust out the back in some manner and to drop WOT sound about 7-8 decibels now to net a 3-4 decibel decrease after the Head/Cam swap

 

just a little update and question: Now that the system has been on for 3 weeks it seems I can finally feel a nice difference. Maybe it took that long for my perception to catch up, who knows. But I can definitively say the anything from 50-100% TP there is a surprising increase in responsiveness/hp. Lately, I've been having fun breaking her loose on freeway onramps, nothing like straightening up early for the straightaway blast , lol.

I would say 0-20% TP is somewhat less responsive, and 20-50% TP is stockish feeling. I'm guessing since no tuning was done post install, that the lower TP responsiveness can be tuned back in?

 

WOW, I put a set of those CATS (like Moregrip in his pic below) on My truck yesterday.
and man what a differance, much louder, and I think I lost some boost, also
more noise in the cab, but I'm pulling 60 lb/min airflow at 5800rpm up, when
just before the Metalic Cats I would only flow 56 lb/min at 6000rpm.

BTW awsome Exhaust moregrip, your truck is SWEET.

 

definitely free'er flowing, nice that you measured the difference as well . do you have an x-pipe in there somewhere?

thanks for the compliment bro