intake + straightpipe = lower power?
07-28-2007, 05:32 PM
#1
Thread Starter
Join Date: Feb 2007
Posts: 14
intake + straightpipe = lower power?
hey guys, got a GT with a K&N typhoon intake which gave me a nice little boost, adding on the straight pipe magnaflow catbacks i thought id be getting an overall increase in torque and horses....i havent run it on the dyno yet but i feela huge drop in low end torque to the extent that it used toburn rubber on steppin the pedal but now my torque seems aimed more towards the higher end and im not getting much of a punch from my acceleration till i pass 40mph or so.....is it just me or is this the outcome to expect from a straight pipe....and if it is,,,,any suggestions on parts to lift up my low end torque??
07-29-2007, 01:33 AM
#6
2nd Gear Member
Join Date: Jan 2007
Location:
Posts: 367
RE: intake + straightpipe = lower power?
I think sound is really tied into preception of power, aka the butt dyno
I've found since going to the stock axle backs that I'll let the engine loaf at 4000rpms where there is a ton of torque
With my SLP LMs the car was way too loud by 2500rpms so I was shifting a lot earlier and not getting into the full power band
I've found since going to the stock axle backs that I'll let the engine loaf at 4000rpms where there is a ton of torque
With my SLP LMs the car was way too loud by 2500rpms so I was shifting a lot earlier and not getting into the full power band
07-29-2007, 01:52 AM
#7
2nd Gear Member
Join Date: Jun 2007
Location:
Posts: 153
RE: intake + straightpipe = lower power?
ORIGINAL: Speedyejl
I think sound is really tied into preception of power, aka the butt dyno
I've found since going to the stock axle backs that I'll let the engine loaf at 4000rpms where there is a ton of torque
With my SLP LMs the car was way too loud by 2500rpms so I was shifting a lot earlier and not getting into the full power band
I think sound is really tied into preception of power, aka the butt dyno
I've found since going to the stock axle backs that I'll let the engine loaf at 4000rpms where there is a ton of torque
With my SLP LMs the car was way too loud by 2500rpms so I was shifting a lot earlier and not getting into the full power band
07-29-2007, 06:45 AM
#8
2nd Gear Member
Join Date: May 2007
Posts: 355
RE: intake + straightpipe = lower power?
Less back pressure usually means less torque (to an extent). So opening up the exhaust without pulling in equal or more air will result in less torque.
To lift the low end you will need more air in.
EDIT: There is actually a bit more to it than that but...
To lift the low end you will need more air in.
EDIT: There is actually a bit more to it than that but...
07-29-2007, 10:06 AM
#10
RE: intake + straightpipe = lower power?
ORIGINAL: Jizz
Less back pressure usually means less torque (to an extent). So opening up the exhaust without pulling in equal or more air will result in less torque.
To lift the low end you will need more air in.
EDIT: There is actually a bit more to it than that but...
Less back pressure usually means less torque (to an extent). So opening up the exhaust without pulling in equal or more air will result in less torque.
To lift the low end you will need more air in.
EDIT: There is actually a bit more to it than that but...
NO tune CAI = junk, even the tuneable CAIs get the most from the tune and very little from the CAI
what do you mean straight pipe magnaflows? did you ditch the H pipe and run true duals? did you just do axlebacks?,
straight pipes = no cats, no mufflers