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  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
  • 1994 - 1995 Specific Tech

is this back pressure issue ?!

  • Thread starter Thread starter Dave30250
  • Start date Start date Oct 2, 2006
D

Dave30250

New Member
Oct 2, 2006
1
0
0
Oct 2, 2006
#1
  • Oct 2, 2006
  • #1


Greetings everyone !

first i would like to say i have been reading many post here in the forum and now this is my turn to get some help for my question ! i have a ford 1995 5.0 5 speed, i just get installed a mac 2.5 inchs h-pipe (no cats) with 2 chamber flowmaster 40 series. the sound is just crazy ! the car has 11000 km and has been baby tune all the time. (second owner) i am the owner since 1999 bought it at 40000km. Now i notice a performance difference, it seems that it can get higher rpms and shedoesnt stop till she reach 5500 rpm... before the exhaust swap at 5000 rpm was the time to shift... it seems that i can shift at higher rpm... BUT i was able to get around 110-115 km/h in second gear and now it does only around 90..., could i have a problem with the back pressure, the engine is completely stock and is using the stock headers from the factory... im pretty sure when i was shifting in second gear i had a little more bang in the butt... is there any good performance upgrade i can do to get profit of this new exhaust because the whole point with this is to be quicker and not slower... i tought maybe i do less speed in second gear but i am reaching it quicker... what are your advisem guys on this you have so much experience in here i am waiting for you now !!:SNSign:
 

WhiteDevil

New Member
Feb 4, 2003
2,717
0
0
San Diego
Oct 2, 2006
#2
  • Oct 2, 2006
  • #2
Thats a very wierd question. I just noticed more power all around after my X-pipe and catback. As for speed when you shift gears that is all numerical. At a certain rpm in a certain gear you will always be at the same speed. No matter how much power you have.
 

JJ95GTID

Active Member
Sep 22, 2003
1,141
4
49
Phoenix, AZ
Oct 2, 2006
#3
  • Oct 2, 2006
  • #3
This is a strange situation. If you are not shifting until 5500rpm then you should be going faster in that gear than previously. The only thing I can think that would even allow you to spin the engine faster and actually be going slower speed is the clutch slipping. Otherwise everything else in the drivetrain is locked together by gear teeth in a manual 5 speed car.
 

gcomfx.com

Founding Member
Oct 22, 2002
3,690
0
56
Republic, MO
Oct 2, 2006
#4
  • Oct 2, 2006
  • #4
Or the stock tach is off.... mine started going bad around 140-150,000 miles... 180,000 is completely went bonkers.
 
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