X-pipe gains .3 off of 1/4

QuickCapri83 · Aug 16, 2006

So after installing my pipe, I consistantly knock off .3 and gain about 5mph in the quarter. This using a Gtech, they're very accurate tho, we tested before installation of all mods also. Another thing that's weird, my friends 5.0, and MY 5.0 Capri, didnt gain anything at all that I could tell, or he. Ofcourse I didnt have a Gtech at the time, but the H-pipe on my 5.0 defoantly didnt do what my X did for my 4.6....Is there a difference in the motors, one wants to breath better?

Or maybe my 4.6 is just liking the pipe alot, I know some cars just run good for no apparent reason...It runs better then my few friends that have 99+ 4.6's. I dont get it

RoadconeTuning · Aug 16, 2006

factory freak and it responds well to the pipe... theres somethign like 8* tolerance allowed in the stock cam timing... thats a bit insane to me...

BooWFO · Aug 16, 2006

3 tenths and 5 mph??? that be like what a 30-50rwhp increase?
well anyways congrats.

DerekStangGT · Aug 16, 2006

QuickCapri83 said:
So after installing my pipe, I consistantly knock off .3 and gain about 5mph in the quarter. This using a Gtech, they're very accurate tho, we tested before installation of all mods also. Another thing that's weird, my friends 5.0, and MY 5.0 Capri, didnt gain anything at all that I could tell, or he. Ofcourse I didnt have a Gtech at the time, but the H-pipe on my 5.0 defoantly didnt do what my X did for my 4.6....Is there a difference in the motors, one wants to breath better?

Or maybe my 4.6 is just liking the pipe alot, I know some cars just run good for no apparent reason...It runs better then my few friends that have 99+ 4.6's. I dont get it

Gtech=

track=

01BlkGT · Aug 16, 2006

Something doesn't seem right, b/c I got a 5mph and .5 tenth gain in the 1/4 from track timing with LT's and prochamber. So either your car was extremely rich from the factory and was running slower than the avg. and the x-pipe leaned it out, or the gtech is not very accurate. Also keep in mind, the way gtech and 1/4 trap speeds are calculated differently. Have you done a before and after dyno?

QU!CK · Aug 16, 2006

GTECH isn't as accurate as most people are led to believe

For reference, I dropped ~.2 in the 1/8th when I did my FULL exhaust (ie, long tubes, o/r midpipe, and catback).

-J

WillDuhhBeast · Aug 16, 2006

QU!CK said:
GTECH isn't as accurate as most people are led to believe

For reference, I dropped ~.2 in the 1/8th when I did my FULL exhaust (ie, long tubes, o/r midpipe, and catback).

-J

+- two tenths in the 8th is an awesome gain considered in the 1/4th

QU!CK · Aug 16, 2006

WillDuhhBeast said:
+- two tenths in the 8th is an awesome gain considered in the 1/4th

Thanks

I did a before and after dyno. The car picked up ~20rwhp/rwtq and a very nice kick in the pants

-J

QuickCapri83 · Aug 16, 2006

I dunno, all I can say is the X-Pipe has made a huge difference, I dont understand why. After 3k or so you can really start to tell the difference, and from 4k-6k it feels like a really good gain.

Ehh Gtech could be off, no doubt, but there's certainly a huge gain in acceleration since the pipe, something i've never experienced with any of my 5.0's. Guess it's just something weird.

01Steeda · Aug 16, 2006

what mods do you have??? something isnt right if all you have is an x pipe and put down over 250hp.

QuickCapri83 · Aug 16, 2006

Just what's listed in sig, misc stuff isnt installed yet.
Maybe the Gtech wasnt done properly. But anyways I can "feel" a huge difference in the top end, no idea why. It defonantly pulls harder than it should from just a pipe...I dunno. I cant explain why it runs like it does.

QU!CK · Aug 16, 2006

01Steeda said:
what mods do you have??? something isnt right if all you have is an x pipe and put down over 250hp.

That's not his graph

-J

myponyrocks · Aug 16, 2006

I had a huge SotP gain and a loss of rubber on the tires after my prochamber install so who knows... yes the G-Tech isn't 100% but from most posts I'd say 90% close?

BurningRubber · Aug 16, 2006

RoadconeTuning said:
theres somethign like 8* tolerance allowed in the stock cam timing... thats a bit insane to me...

Wow, wtf... maybe thats why my car is slow as ass by PI standards.

hotmustang331 · Aug 16, 2006

Yes O/R X . Man made a HUGE difference! I know where your coming from

Mike97gt · Aug 16, 2006

the G-tech is pretty accurate if you use your brain when using it..

1. do not time going up hills or downhills no matter how slight.. This will throw the readings off..

2. no times anywhere are going to be the same, small differences in weather will swing the times one way or another.

I have used the newest model of the G-tech and I find it to be a great tool for practice at the track.. the only thing that is slightly off is the MPH becuase on the G-tech it's the MPH at the end of the 1/4 where at the track it's average MPH thru the trap.

01Steeda · Aug 16, 2006

QU!CK said:
That's not his graph

-J

then who's graph is it? I thought he presented it to be his

ZaC851 · Aug 16, 2006

Sorry buddy, you didnt gain 5mph from a simple midpipe upgrade, It aint happening. Go to the track. Then report back to us.

01BlkGT · Aug 17, 2006

Well no one is disputing that the x-pipe is helping in the power dept. It will certainly help the engine in the upper rpm band not be so lazy. I'd say it is very likely to pick up 10-15rwhp from the x-pipe depending on how much leaner your car is running from the mod. I see you have BBK headers, short or long? What did you have before the x-pipe? If you really want to gain the full benefits from the x-pipe, get some gears....biggest SOTP difference you can do for the car other than power adders.

QU!CK · Aug 17, 2006

01Steeda said:
then who's graph is it? I thought he presented it to be his

Go back and reread who posted the graph...lol, I was the one that posted it to show my gains from adding LT's, o/r X, and catback

-J

X-pipe gains .3 off of 1/4

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