05-26-2018, 11:15 PM | #1 |
Drives: 1LT; IBM; 6 Spd Manual Join Date: May 2009
Location: Heath, Tx.
Posts: 499
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Shorty headers, Resonator and Cats combinations
Couple of questions:
1 - Do the shorty headers require the resonator install or is the resonator used for a straight pipe to back end configuration? Assume those with resonator use a high flow cat and resonator? Is that the option to using the stock dual cats? 2 - I have a American Thunder axle back and wondering if the resonator is necessary after I install shorty Doug Thorley headers. 3 - Also, stock dual cats vs high flow single cat, anyone know if there is a significant difference? Some have installed the shorties with the stock cats welded flange mated to the shorties and gone on with that. 4 - Finally, is there any advantage after install of the shorties to also installing a X or H pipe config? Thanks!
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05-30-2018, 03:23 AM | #2 |
Drives: 2010 Join Date: Nov 2016
Location: Los Angeles, CA
Posts: 208
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Where are you getting your Doug Thorley shorties from? I’ve been thinking of getting some also
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05-30-2018, 07:35 AM | #3 |
Drives: 1LT; IBM; 6 Spd Manual Join Date: May 2009
Location: Heath, Tx.
Posts: 499
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Haven't decided yet, but not seeing any special deals, all sources are same price.
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05-30-2018, 09:40 AM | #4 |
Instagram: Sangstah
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Im running JBA shorty headers with JBA high flow cats and a Magnaflow X pipe with a muffler delete and love the setup, it makes good power and sounds great. You can run shorty headers with the stock cats but the power gain is from deleting the restrictive stock cats. You can remove the resonators if you want more noise. I would definitely recommend a x pipe over the stock h pipe, you can even get a resonated x pipe.
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05-30-2018, 10:48 AM | #5 | |
Drives: 2010 Join Date: Nov 2016
Location: Los Angeles, CA
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Quote:
Edit: oh shit! I just realized you’re sangstah. I follow you on ig Lol. I’m @lucas.310 |
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05-30-2018, 11:19 AM | #6 |
Drives: 2013 SW 2LT/RS LFX/AY6 Join Date: Feb 2013
Location: Orlando, FL
Posts: 1,741
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Yes, the Magnaflow resonated x (11386) with a resonator and muffler delete sounds great on the V6. There's lots of posts or videos about it across the forum and youtube. The 11386 would keep the rasp in check if you had headers and secondary cat deletes or high flow cats, though you might want a set of mufflers for the rear. Magnaflow, Borla, or MRT have good rear muffler options.
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K&N CAI, 1LE Strut Tower Brace, Elite Engineering Catch Can and Clean Side Separator, Apex Scoop w/ Washer Relocation Kit, CTS Front Calipers and Rotors, JacFab Ported Intake Manifold, JacFab Intake Manifold Spacer, 80mm Overkill Throttle Body, SS Brake Lines, Ideal Garage Master Cylinder, Monster Twin Disc Clutch, NPP Retrofit w/ Magnaflow Resonated X, ARH Catless Downpipes, JRE Built 3.45 Diff, 1LE Axles, 1LE Hubs, Overkill Tuned, BMR Anti Wheel-hop Kit Stage I, ACS TL1 Hood Insert, ZL1 Spoiler
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05-30-2018, 07:07 PM | #7 | |||
having FUN now 13.66@101
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Listen with a set of head phones and enjoy.
OBX headers, No Cats, Magnaflow (11386), MRT 2.0
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05-30-2018, 08:55 PM | #8 |
Drives: 1LT; IBM; 6 Spd Manual Join Date: May 2009
Location: Heath, Tx.
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So a Resonator X Pipe with my Flowmaster mufflers and a pair of high flow cats with shorty headers should offer some good increase, no? Afterward a tune to squeeze out whatever can be done with this setup.
Would I see a much difference using shorty headers, stock dual cats and stock setup back to axleback Flowmaster system with a tune or to get anything out of the shorty headers do I really need high flow cat and resonator X Pipe? Thoughts? ... and thanks a bunch.
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05-31-2018, 09:29 AM | #9 |
Drives: 2013 SW 2LT/RS LFX/AY6 Join Date: Feb 2013
Location: Orlando, FL
Posts: 1,741
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The resonated x pipe is for sound. It brings the exhaust note down a few octaves. If you don't run the resonated x and leave the stock H and resonators, in my opinion at least you're leaving a lot of satisfaction on the table. The resonated x definitely seems to be the ultimate addition to our cars for sound. You don't need it for power, necessarily, on paper and in theory x pipes flow best, but for sound, absolutely. Adding the resonated x to my NPP system was the best decision I made.
You'll see some minor gains running shorty headers, but yeah, at least deleting the secondary cats (unmonitored, no CEL if you do) is where the gains are. High flows or long tubes with / without cats is where max power is. And then tune.
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K&N CAI, 1LE Strut Tower Brace, Elite Engineering Catch Can and Clean Side Separator, Apex Scoop w/ Washer Relocation Kit, CTS Front Calipers and Rotors, JacFab Ported Intake Manifold, JacFab Intake Manifold Spacer, 80mm Overkill Throttle Body, SS Brake Lines, Ideal Garage Master Cylinder, Monster Twin Disc Clutch, NPP Retrofit w/ Magnaflow Resonated X, ARH Catless Downpipes, JRE Built 3.45 Diff, 1LE Axles, 1LE Hubs, Overkill Tuned, BMR Anti Wheel-hop Kit Stage I, ACS TL1 Hood Insert, ZL1 Spoiler
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05-31-2018, 10:57 AM | #10 | |
having FUN now 13.66@101
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Quote:
Those of us who have LT headers, need the resonated X pipe to eliminate the RASP that is horrible in the 2200 - 2800 RPM range.
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05-31-2018, 11:13 AM | #11 |
Drives: 2013 SW 2LT/RS LFX/AY6 Join Date: Feb 2013
Location: Orlando, FL
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My car with no cats and the stock NPP exhaust had awful rasp too, I think in that exact range. That's why I added it, though the deeper tone was a huge plus. I'm sure there are people that for some reason like that kind of sound though.
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K&N CAI, 1LE Strut Tower Brace, Elite Engineering Catch Can and Clean Side Separator, Apex Scoop w/ Washer Relocation Kit, CTS Front Calipers and Rotors, JacFab Ported Intake Manifold, JacFab Intake Manifold Spacer, 80mm Overkill Throttle Body, SS Brake Lines, Ideal Garage Master Cylinder, Monster Twin Disc Clutch, NPP Retrofit w/ Magnaflow Resonated X, ARH Catless Downpipes, JRE Built 3.45 Diff, 1LE Axles, 1LE Hubs, Overkill Tuned, BMR Anti Wheel-hop Kit Stage I, ACS TL1 Hood Insert, ZL1 Spoiler
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06-01-2018, 08:50 AM | #12 |
Drives: 1LT; IBM; 6 Spd Manual Join Date: May 2009
Location: Heath, Tx.
Posts: 499
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Thanks for the info guys! All the best.
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