I searched and didn't find much...has anyone on these boards installed the urd y pipe? The charts from Gadget looked like it gives ~15hp to the wheels. I'm thinking about buying it, (not concerened with emissions) but am conerned about any significant MPG gains/losses, especially when paired with an intake. Woth getting? Any thoughts, observations, opions are welcomed.
the y pipe will eliminate both rear cats.... coupled with a free flowing catback and free flowing intake won't give you the hp you think without adding a maf calibrator and have it tuned...
i have an airaid intake and magnaflow catback and with a tune i pulled 241 hp and 268 lb. tq. on the dyno. Gadget pulled 234 hp and 272 lb. tq. with the tuned URD CAI and Y-pipe with URD exhaust. Of course, this isnt the end all be all, but it's pretty obvious that the URD exhaust is much more effective on a F/I truck, rather than N/A...
i have an airaid intake and magnaflow catback and with a tune i pulled 241 hp and 268 lb. tq. on the dyno. Gadget pulled 234 hp and 272 lb. tq. with the tuned URD CAI and Y-pipe with URD exhaust. Of course, this isnt the end all be all, but it's pretty obvious that the URD exhaust is much more effective on a F/I truck, rather than N/A...
Did you retune and do you need a plug in module to retain the tune (like a power commander or the like)? Hows mpg now?
Did you retune and do you need a plug in module to retain the tune (like a power commander or the like)? Hows mpg now?
look at the urd site.. they have 2 different devices applicable for normally aspirated.... i don't have actual #'s for mpg savings. but leaning out the mixture will save gas and increase hp...
the only mod i've done so far is the catback.... and it was noticable on the butt dyno. the trd is 1/4" larger inside diameter than stock. my spin is, mods should be done from back to front. if you can't let it out fast, letting it in fast is a waste.... i'll bet the stock y-pipe is restrictive in bends alone, eliminate 2 rear cats and it's gotta' be noticable. (i don't recall the inside diameter of the urd y-pipe)
i have an airaid intake and magnaflow catback and with a tune i pulled 241 hp and 268 lb. tq. on the dyno. Gadget pulled 234 hp and 272 lb. tq. with the tuned URD CAI and Y-pipe with URD exhaust. Of course, this isnt the end all be all, but it's pretty obvious that the URD exhaust is much more effective on a F/I truck, rather than N/A...
I can not tell you how pleased I am to see that you have gotten such a great result with your combination and using our URD MAF Sensor Calibrator to tune it all in. However, I think your end conclusion that is much more effective on a F/I truck rather then a N/A truck.
First, it is not the maximum number, but the total over gain that is important. Every vehicle is different to some degree and every one will print a different baseline number as a starting point. Just comparing a final result is not a good way to make a good comparison.
Next, you should be careful comparing the results from different types of dynos. We all know that differnt dynos report a different number even on the very same truck and the same day at the same location.
Finally, your dyno chart, although very impressive, is reported as flywheel HP and TQ. That dyno you used uses power taken from the hubs and tries to make a wild guess what the power is at the flywheel.
Now with these things considered, 234 rear wheel HP beats 241 flywheel HP, and that would mean that a URD True Cold Air Intake and URD Exhaust beats an AirRaid and Magnaflow. Of course the only true way to properly compair this is to compare those products on the same truck, on the same dyno, at the same location, on the same day. I will bet you a box of donuts the URD True CAI will crush the AirRaid one...
I can not tell you how pleased I am to see that you have gotten such a great result with your combination and using our URD MAF Sensor Calibrator to tune it all in. However, I think your end conclusion that is much more effective on a F/I truck rather then a N/A truck.
First, it is not the maximum number, but the total over gain that is important. Every vehicle is different to some degree and every one will print a different baseline number as a starting point. Just comparing a final result is not a good way to make a good comparison.
Next, you should be careful comparing the results from different types of dynos. We all know that differnt dynos report a different number even on the very same truck and the same day at the same location.
Finally, your dyno chart, although very impressive, is reported as flywheel HP and TQ. That dyno you used uses power taken from the hubs and tries to make a wild guess what the power is at the flywheel.
Now with these things considered, 234 rear wheel HP beats 241 flywheel HP, and that would mean that a URD True Cold Air Intake and URD Exhaust beats an AirRaid and Magnaflow. Of course the only true way to properly compair this is to compare those products on the same truck, on the same dyno, at the same location, on the same day. I will bet you a box of donuts the URD True CAI will crush the AirRaid one...
If I wasn't on a bit of a diet, I'd have you deliver those donuts personally. After all... an actual intake will outperform a theoretical intake 5 times out of 5.
__________________ 2008 Black D-Cab Limited 4x4 5.7, Red Rock leather, stock... for now
Does Anyone have any sound clips with the URD exuast? It looks like a real nice system,but was curious how it sounds. At least just the exuast, but i'm looking at getting the catback and the y pipe.
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