Boss949

I need some advice.

Planning on installing a Griggs Torque Arm Kit. My installer and I both forgot that the Kit will not work with the OEM H Pipe and side exhausts.

So, I can leave the setup the way it is and not install the Torque Arm or do away with the side exhausts (which I really like. And I know it's aesthetics).

So, X Pipe users help?

I'm running Roush A/B with Jegs Performance SS Cat Deletes now.


FRPP X pipe is installed.
One of the issues that I had after original post was after the AED Tunes and Cat Deletes, I would get serious backfires. It was definitely too much. So with potential suspension upgrades and the need for better performance , I went for the X pipes.

1. Idle: It's definitely a lower tone (I thought it would be higher pitched than the H) and the AED Lopey is very nice with the X
2. WOT: higher pitched there for sure; but I like the sound.
3. Quieter in the cabin of course with no sides
4. Still getting backfires; but about 60% in volume and sound level
5. Performance: "seat of the pants Dyno" says definite improvement. I'll be able to tell better Friday night at TMS drags

ConeBoss

X pipes supposedly are slightly better flowing and thus better performance. They also change the exhaust note to a higher pitch compared to the H pipe.(not as much baritone rumble) Also, by ditching the stock H pipe and side exhaust your car will be approx. 50lbs lighter.

Boss949

ConeBoss: thanks for info. We have a slight change of plans. There is a new product coming out in a few weeks, which may allow me to keep the stock side pipes. I had just decided to go with the X pipe, but will now wait for this new piece for a few reasons.

JPC

please post more details
who?
price?

Boss949

As soon as I'm allowed to release the information, I will give all the details on this thread and/or post a new one.

Should be about 2 weeks.....

Brandon302

IMO if your getting suspension work done then you should care more about the handling performance aspect of the car instead of the silly side exhaust. Get a good sounding cat back and be done with it.

Boss949

LOL....

I picked up the Boss tonight. Jack Rails installed and the rear torque arm will be a couple more weeks.

Now to the exhaust: I have the AED custom tunes and the side exhausts are pretty much "over the top" on decel, especially with the Lopey tune. So, I'm thinking the X pipes are a must.

12C/OBoss

the very first thing I changed on my car was the side exhaust to a Magnaflow o/r x pipe and never looked back. Do you want "sound" or real performance? Sounds like you want performance so ditch the 50lbs and tractor sounds for the x pipe! BTW I was speaking with one of the engineers on the Boss project 2 years ago and he stated "the very best mod for a track Boss would be to install an offroad x pipe and tune" I did that and picked up over 33 HP and 30 lbft... at the rear wheels on a Mustang load dyno...

Boss949

+1

Working on the O/R X this week. Thanks

Fenderaddict2

I was told long tubes.

Boss949

FRPP X pipe shipped; install on Wed. Drag race Friday night.

12C/OBoss

if you have cats, then don't expect too much over 20rwhp. The cats are are the restriction

Boss949

I have Cats. They are in a box on the shelf with the other OEM parts.

Boss949

X Pipe worked great. I could sense an increase in power. No timers, etc at the Friday Night Drags at TMS.

Lost the final race to a 2014 Modded 5.0. Beat him last week and outlaunched him; but suffered a 2nd gear lockout!!! CHE K Brace w/ Engine Torque Limiters coming next.

Here's a link to the Boss beating a GS Vette:

s197ford

Yep. Long tubes (which deletes the cats) are where the power is at in the exhaust. X or H is preference for sound on this car. Power difference is nil.

People seem to be confused when someone mentions an off-road x or h-pipe on the new 5.0L's. The stock h-pipe is separated from the cats, so there is no such thing as "off road" h or x anymore. Applies to 4.6L 3V cars and earlier, though, since cats and h were on one assembly.

You coming to Woodward this next month?

Fenderaddict2

Absolutely going to Woodward. It's a don't miss date on my calendar. However I'm almost ashamed to show up in my beaten and worn Boss. Thinking it might be time to pull out the '65 and avoid the ridicule.