Its no wives tale on these Titans...Seen 3" y-pipes get murdered at the track by equally modded Titans for a while now...But, at least their was finally a response
Well I have a 2.5" system that was originally Banks MOnster 3". The system is now 2.5" to the ypipe union which is still Banks 3" out to back. See picture here and my truck runs good! So I'd LOVE TO HAVE A 2.5" Yunion!My apologies to everyone that expected a reasonable response to this thread, only to be ignored. Please be aware that Jeff Barker was moved back into direct sales, and we'll do our best to keep our support of Titan Talk members more active.
I believe that this thread was started because of all the posts related to reduced diameter Y-pipes, and to judge the interest in our revising the product. Seems most everyone wants it. While I could simply have the change made and start selling it, that's not how Gale operates. It wouldn't be right to sell a product without really knowing how that change impacts your vehicle performance. You want the best. We want the best.
So that's where this sits at the moment. We'll fab up the 2.5-inch Y-pipe and do some performance testing to get honest data that demonstrates whether a gain is to be had, or if this is an old wive's tale lingering around from when pressure-reducing glass packs were the rage.
I just need to find a hole in the schedule big enough to make it happen,
Business and Engineering Operations
Gale Banks Engineering
Hey 0-FIVECC I was wanting to know if you are running a Y thats a 2.25 in and 3 out? I also wanted to know how it is working for you Iam planning on building a exhaust and this was one of those parts that I wanted some info on.Oh no, I know what your saying, it's the same argument I use when I tell someone not to go by dyno numbers on different days, or track times from different conditions. I'm talking over 1 -2 year span.....Example, one guy (pinoytitan), used to have a 3" Banks, and ran low to mid 14's all year (including Winter), he has the same mods as me. Once he put the Nismo exhaust on, the next he was running low 14's to high 13's, and we are talking over a whole year. Another example, there is a guy who runs with us that has the same mods as me, but he also has Cams and a PGM 90mm TB, with his 3" y-pipe, he consistently about .1-.15 slower in the 1/4 mile then me even with his much more extensive mods (he has a higher trap speed because of his top-end, but my lowend is better). He recently put on an 07 stock exhaust and claims he has gained all his low end torque back...There is only one guy who does well with the 3" Banks y-pipe, Gweasel77....Has 22's and is still only .1-.2 slower then my truck. I'm just saying, their are people who have spent a lot of time and money modifying one of these trucks, and it's agreed upon that 3" is too big, personally I would go with a 2.25 to 3", thats the y-pipe I run, and I have the best low-end torque (and 1/4 miles times) out of any other equally modded Titans....But hell, you guys are the ones making millions a year LOL, not me, so your obviously doing something right...I will say that a Banks sounds awesome
But your running on 37's How about 33's - 35's ...The bigger tire is heavier so that mass affects numbers. Try a stock T and see what show's up.In response to the interest expressed by Titan owners for a 2.5" y-pipe, to replace the 3" version offered in our kit, a performance comparison was made on a 2006 Crew Cab XE 2wd w/2.94 gears and 37-in BFG AT's. A RaceLogic VBOX was used to datalog several 0-60 mph runs, pre and post installation of a 2.5" prototype y-pipe. Note that all runs were performed by the same driver, on the same stretch of road, on back-to-back days for consistent ambient conditions. The results are as follows:
Run 1 0-60 MPH: 8.06 sec
Run 2 0-60 MPH: 8.15 sec
Run 3 0-60 MPH: 8.12 sec
AVG: 8.11 sec
Run 1 0-100m: 6.98 sec
Run 2 0-100m: 6.99 sec
Run 3 0-100m: 6.99 sec
AVG: 6.99 sec
Run 1 0-60 MPH: 8.10 sec
Run 2 0-60 MPH: 8.06 sec
Run 3 0-60 MPH: 8.16 sec
AVG: 8.11 sec
Run 1 0-100m: 7.01 sec
Run 2 0-100m: 6.97 sec
Run 3 0-100m: 7.13 sec
AVG: 7.04 sec
I've also observed for the last three-four fuel stops, that I'm down about 20-30 miles per tank with the 2.5" y-pipe. I'll be switching back to the 3" in the next couple days to see if the fuel economy improves.
So...there you have it, based on some limited acceleration testing. We would need to have seen a hint of an improvement before revising the kit or committing to more testing.
But your running on 37's How about 33's - 35's ...The bigger tire is heavier so that mass affects numbers. Try a stock T and see what show's up.