Opinion on this Xpipe/Resonator hybrid

[blackjack]

i replaced the resonator on my borla system with the x-pipe,and i got rid of the restriction inside the borla pipes,right in front of the resonator...no resonnance so far
bj

[Shinto]

Originally Posted by blackjack

i replaced the resonator on my borla system with the x-pipe,and i got rid of the restriction inside the borla pipes,right in front of the resonator...no resonnance so far
bj

Blackjack: You replaced the resonator with the x-pipe or placed the x-pipe before the resonator?

I already think the system drones a bit, but there again, I don't have anything else to listen to -- 3 out of the 4 the Boze amplifiers is fried. The engine is my only entertainment... I just don't want to go deaf driving it.

Originally Posted by bradslt5

...i believe the s pipe should be between 16-24 inches from the collector if one has headers

If I understand you correctly, the x-pipe need to go before the resonator, as that would be 16-24" from the collectors. I'm not running headers though, just the stock manifolds -- have to pass smog here in CA...

[blackjack]

i got rid of the resonator completely...replaced it with a 2.5'' x-pipe,but i kept the cats;not loud at all inside...i had a 65 big block with the original side pipes...wanna talk about resonance??...to me,my car is very civilized,both in and out;could even be louder,i wouldnt mind...noise is kinda hard to evaluate,tho...
bj

[Shinto]

Originally Posted by blackjack

i got rid of the resonator completely...replaced it with a 2.5'' x-pipe,but i kept the cats;not loud at all inside...i had a 65 big block with the original side pipes...wanna talk about resonance??...to me,my car is very civilized,both in and out;could even be louder,i wouldnt mind...noise is kinda hard to evaluate,tho...
bj

Well, I tried to have the x-pipe added before the resonator, but there just isn't enough room with the Borla system -- the resonator can only be moved back about 12" before it loses clearance to the differential. This ALMOST works, except the x-pipe and the Borla resonator have different spacing between the pipes and there is no room to put pipes with the proper s-curves to make the two match up. Ultimately, I got rid of the resonator in favor of the x-pipe.

Great seat of the pants improvement -- feels like another 20-30 hp on tap. It isn't any louder outside the car, but is a little lower in frequency. I do hear a bit more of a low frequency (about 30 Hz or so -- like a good subwoofer) drone from underneath my feet, but only at certain rpms as I accelerate. It's actually still quieter than my 78 Trans Am. I can live with it a lot easier than the factory placement of the cats -- anyone ever drive barefoot and burn their little toe to the right of the accelerator? Ouch!

[jonszr1]

growing up at the beach , I HATE SHOES, i allways drive bearfoot , never burned my toe though

[Shinto]

Just a quick update after living with the X-pipe for a while for what its worth. Fuel economy has gone down from about 13.5 to 12.4 (I almost never get out on the freeway). The resonance is exclusively between 1500 and 2000rpm (right where I usually cruise, but I can live with it just fine). Not too bad considering the seat of the pants power increase, but you do get used to it quick (and at $4.70 per gallon for super...) Sadly, it is the more fuel efficient of my 2 cars, both of which require super unleaded... I'd rather kill myself than buy a Prius though. Love hurts.

[bradslt5]

Originally Posted by Shinto

Blackjack: You replaced the resonator with the x-pipe or placed the x-pipe before the resonator?

I already think the system drones a bit, but there again, I don't have anything else to listen to -- 3 out of the 4 the Boze amplifiers is fried. The engine is my only entertainment... I just don't want to go deaf driving it.


If I understand you correctly, the x-pipe need to go before the resonator, as that would be 16-24" from the collectors. I'm not running headers though, just the stock manifolds -- have to pass smog here in CA...

you need to move to inyo county we only have to smog our car when they change owners . if you want to put an x pipe with stk exhaust i would put it before the resonator . x pipe flow better when the exhaust is hot to far back and it gets too cold to create that vortex suction old style way of finding the perfect spot is ti spray some paint on the exhaust tubong in that 26=30 in area where it first burns off is the sweet spot