You want loud:)? Bypass Pipes...
01-29-2006, 02:52 PM
#31
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Originally Posted by Ray S
If I understand correctly you could lose hp at lower RPMs due to a lack of backpressure? Is that correct?
Has anyone done a before and after dyno with the these?
Has anyone done a before and after dyno with the these?
***** Just read on their site that you get marginal gains...... 1-2 HP and a couple FP as well
Last edited by jeev; 01-29-2006 at 03:25 PM.
01-29-2006, 03:51 PM
#32
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Originally Posted by Ray S
If I understand correctly you could lose hp at lower RPMs due to a lack of backpressure? Is that correct?
Has anyone done a before and after dyno with the these?
Has anyone done a before and after dyno with the these?
Originally Posted by JimB
I actually gained 13 hp and similar torque when I went from a setup like Sharkeys to straight pipes. All the power is above 5000. Below that the car just dies. That's ok for racing most of the time. You probably can't tell in the picture but I have Supertrapps so I can add backpressure if I am at a track where I need it.
01-30-2006, 09:36 AM
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I haven't dynoed the car but there are three of us 996's that run together at the track and two of us have the bypass pipes and we definately pull the third guy with his stock exhaust. Now we have put in "Pep pipes" and will know if that does anything at 48 Hours. I let you know.
01-30-2006, 10:26 AM
#34
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Carlos,
We're going to dyno the car on Wednesday at a few different levels of backpressure. It should be interesting.
Mitch,
Are you racing or doing the DE at Sebring? Either way, look me up. I'll be in the loud black 996.
Jim
We're going to dyno the car on Wednesday at a few different levels of backpressure. It should be interesting.
Mitch,
Are you racing or doing the DE at Sebring? Either way, look me up. I'll be in the loud black 996.
Jim
01-30-2006, 12:37 PM
#36
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Originally Posted by JimB
Carlos,
We're going to dyno the car on Wednesday at a few different levels of backpressure. It should be interesting.
Jim
We're going to dyno the car on Wednesday at a few different levels of backpressure. It should be interesting.
Jim
Please post your results! What are you using to increase backpressure?
01-30-2006, 01:59 PM
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Originally Posted by Russ Murphy
Yeah, I know about that route. I'm talking about 304 stainless mandrel bends and tips from Borla. It's about $200 if I can get the 2 1/4" to work. Get the ends swaged down or something of the like.
i'd be interested in this since, i really can't justify paying the amount that fabspeed wants....not much really involved in them.....anyone know what the radius of that 90degree bend is, if so i can look into some options too.
02-01-2006, 07:22 AM
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Originally Posted by karlooz
FWIW, JimB is running a straight thru exhaust
i think any loss in torque you gain back in better handling. 50 lbs less from the rear would be much better at the track.
i think any loss in torque you gain back in better handling. 50 lbs less from the rear would be much better at the track.
02-01-2006, 12:04 PM
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Originally Posted by sharkster
Eh speaking on 50 pounds extra... holy heavy and SERIOUS cage-batman... Arrived yesterday. That's some series hardware...
my gawd, how am i gonna offset the weight of the cage AND the supercharger?!?!
02-02-2006, 01:18 AM
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so is there any truth to this i hear about the bypass pipes causing premature failure of the cats.... the only thing i can think of is the reduced back pressure causes damage to the cats, but thats just an attempt to find a cause to a supposed problem.....
