Thanks Thumper, I was just trying to get a ballpark range, so that when I go get a dyno reading I won't be expecting too much......although, I think that the shop that is near me has a mustang dyno not a dynojet, so I sure I won't get a totally true number anyway.......I can see where enviroment conditions plays a role, I am sure air density and temp is a big factor in the reading, especially in a very accurate dyno.

Let me go in a different direction...............I've got the tunes, intake, and a somewhat less restrictive exhaust. My next move is re-arrange my exhaust a bit, but what about after that? Would e-fans or pulley's be a better choice or both, or is there something else I am not thinking about, besides a charger, but don't have the $$$ for that!!

 

No problem, I try to help out as much as I can even if people don't like the correct answer. Re-arrange your exhaust? What do you mean? As for the E-Fans and UDPs. Unless you're going to do a S/C eventually, I'd say go for it. The E-Fans will probably be worth more than the UDPs. Sadly enough UDPs on my car only gained my 6 rwhp. However make sure you install them correctly and go with a HIGH quality kit. You don't want to pinch pennies when it comes to E-Fans. I believe there is a kit out now that allows you to hang the E-Fans onto the body of the radiator rather than poke through it which I completely hate.

 

Thanks for the suggestions, will start shoping for e-fans now!!!

When I did the exhaust, I wanted to get rid of that extra gas tank of a muffler, but didn't have much extra $$ so I removed the stock muffler and tailpipe myself and bought a borla Pro-Xs muffler and had a shop attach to existing pipe and run out the side in front of the tire. Everything is the stock one pipe from cats back to where the new muffler is.....

I was thinking of coming off the cats with duals pipes and add a y before the muffler since it is a SI/DO muffler. This is in place of the stock y pipe right behind the cats......Do you think this would help any? And since it all goes to into a SI muffler, I won't need X pipe anywhere will I?

 

Don't do that unless you're going to get a DI/DO muffler or two single SI/SO mufflers. I ran 2.5" true duals from after the cats, got rid of the Y-Pipe, into a H-Pipe and than into two Dynomax Bullet mufflers.

 

Thanks for the info, will leave as is then, until I find a different muffler. Just curious, what is the reason with not using the SI/DO muffler with the pipe setup I was talking about? Isn't it basicly the same, just moving the y-pipe further back and gaining some additional pipe?

I'm not doubting you, I'm just asking some questions, because I know there is something I am missing with all of this.......

 

Well unless I'm misunderstanding you. You're talking about getting rid of the factory Y-Pipe to go into duals but than back into a Y Pipe before the muffler, right? It'd be pointless because it'd just be constricted at the Y Pipe. I think your set-up is fine, there isn't much to be gained on an exhaust system unless you're talking about getting rid of cats and long tubes.

 

Your exactly right, thats what I was thinking.........I see now what you are saying.

Thanks again for all the help!!!!!!!

 

No problem, feel free to ask any questions. I might not have the answer but I'll try.