Where Do I Place A Cut Out??
Where Do I Place A Cut Out?? I just bought a Flow Tech Cut Out. I have a S.L.P Loudmouth exhaust. I also have the stock plat y pipe.
DO I PLACE THE CUT OUT AT??
THANK YOU
ROBERT
DO I PLACE THE CUT OUT AT??
THANK YOU
ROBERT
Where do I place cut out at? I just bought a Flow Tech Cut Out. I have a S.L.P Loudmouth exhaust. I also have the stock plat y pipe.
If I place it before the resonator will I have enought ground clearance?
A local shop said that it would not be a good idea!
Where do I palce the cut out at?
THANK YOU
ROBERT
If I place it before the resonator will I have enought ground clearance?
A local shop said that it would not be a good idea!
Where do I palce the cut out at?
THANK YOU
ROBERT
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Originally Posted by anthonycds
don't cut-outs drain low end torque?
distance ---stock ----- cutout --- Bassani
60ft ------ 1.987 ------ 2.074 ----- 1.969
1/8 ------- 7.902 ------ 7.912 ----- 7.739
mph ------ 93.20 ------ 93.97 ----- 98.60
1/4 ------ 12.102 ----- 12.080 ---- 11.814
mph ----- 117.12 ----- 118.06 ---- 121.35
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Originally Posted by MetallicBluews6
Where do I palce the cut out at?
THANK YOU
ROBERT
THANK YOU
ROBERT
Originally Posted by mrr23
yes. and here's my track times to prove it. same day back to back close vs open. and for kicks, here's the bassani tru-dual also.
distance ---stock ----- cutout --- Bassani
60ft ------ 1.987 ------ 2.074 ----- 1.969
1/8 ------- 7.902 ------ 7.912 ----- 7.739
mph ------ 93.20 ------ 93.97 ----- 98.60
1/4 ------ 12.102 ----- 12.080 ---- 11.814
mph ----- 117.12 ----- 118.06 ---- 121.35
distance ---stock ----- cutout --- Bassani
60ft ------ 1.987 ------ 2.074 ----- 1.969
1/8 ------- 7.902 ------ 7.912 ----- 7.739
mph ------ 93.20 ------ 93.97 ----- 98.60
1/4 ------ 12.102 ----- 12.080 ---- 11.814
mph ----- 117.12 ----- 118.06 ---- 121.35
You are kidding right?
You serious don't think you can compare runs with a .10 difference in 60ft do you?
yes i can. that's exactly where the low end loss is at. you can see it lost .1 on the 60ft and gained 1 mph. but overall 1/4 mile was what .02 gain? not worth it. under 3000 rpms, the open cutout just plain sucks. period. dynos don't shown you anything below 3000 roms now do they? not unless you find a way to lock the auto trans in 3rd gear and can start from say 10 mph. now, goody for me, i can lock the trans in 2nd gear start. just never did one cutout closed vs open. i did do stock exhaust vs the bassani tru-dual. and here's that graph. now, maybe if i had a 3000+ converter, then it wouldn't matter about the loss because i would be going right over it. this track test i did was with stock converter. of, course it's all moot now anyway, because i tossed the cutout. and the bassani dual is on now. amazing i picked up there. and let's say, the car did 60ft the same, then it would only do what maybe a .1 better? still not worth it. but i have done multiple track runs closed vs open. all of them i have lost .1 60ft. how many would you like me to scan and put up?
Last edited by mrr23; Mar 18, 2005 at 07:30 PM.
those runs differed 15* ambient air temp and some a/f difference- interesting you got more out of true duels than a cutout though but i've heard differently from alot of people 
oh here we go with the air temp thing again (been discussed in other threads). those are SAE corrected numbers. not ACTUAL. throws the whole air temp out the window. if you look at the before graph, it addded 1 hp per 100hp with the 1.01 correction. so, in actual numbers the difference would be greater.
oh and before you point out the date differences, i seriously doubt 80* would be considered WINTER air. this dyno is inside a building at macedo motorsports. not outside like VHP has theirs. macedo's dyno is a dynojet224 he runs 1000rwhp vipers on it. personally watched him dynotune a 800rwhp viper one day. drove one of the 600rwhp vipers at the track for his customer one night (that was fun). and because i do alignments for him, i got to drive a supercharged viper (now that was cool!!!)
oh and before you point out the date differences, i seriously doubt 80* would be considered WINTER air. this dyno is inside a building at macedo motorsports. not outside like VHP has theirs. macedo's dyno is a dynojet224 he runs 1000rwhp vipers on it. personally watched him dynotune a 800rwhp viper one day. drove one of the 600rwhp vipers at the track for his customer one night (that was fun). and because i do alignments for him, i got to drive a supercharged viper (now that was cool!!!)
Originally Posted by sleeperstyle
those runs differed 15* ambient air temp and some a/f difference- interesting you got more out of true duels than a cutout though but i've heard differently from alot of people
Originally Posted by mrr23
yes. and here's my track times to prove it. same day back to back close vs open. and for kicks, here's the bassani tru-dual also.
distance ---stock ----- cutout --- Bassani
60ft ------ 1.987 ------ 2.074 ----- 1.969
1/8 ------- 7.902 ------ 7.912 ----- 7.739
mph ------ 93.20 ------ 93.97 ----- 98.60
1/4 ------ 12.102 ----- 12.080 ---- 11.814
mph ----- 117.12 ----- 118.06 ---- 121.35
distance ---stock ----- cutout --- Bassani
60ft ------ 1.987 ------ 2.074 ----- 1.969
1/8 ------- 7.902 ------ 7.912 ----- 7.739
mph ------ 93.20 ------ 93.97 ----- 98.60
1/4 ------ 12.102 ----- 12.080 ---- 11.814
mph ----- 117.12 ----- 118.06 ---- 121.35
Was the cutout used in conjunction with LT's?? True duals also???
Kyle
Originally Posted by NA$TY-TA
Was the cutout used in conjunction with LT's?? True duals also???
Kyle
Kyle
Originally Posted by mrr23
competely stock exhaust. manifolds to tailpipes. the bassani tru-duals hooks to the existing stock manifolds and cats. here's picks of everything done to my car here: http://www.stealthram.com/2000pontiacformula.html
I guess on a N/A car the gains arent that much..... but on my old blower setup it was a big difference.... and on alot of turbo setups it a 50+HP gain.
Ill be ditching my 3" cutout and swaping to a 3.5" for an even better gain with my 3.5" downpipeKyle
my tests were done with 200 n2o. but, it just really depends on how restricted the exhaust system is to begin with. and apparantly the stock y-pipe was the most restrictive part in the system. not the stock muffler.
in your scenario, it's everything past the cutout spot that's the restriction.
in your scenario, it's everything past the cutout spot that's the restriction.
Originally Posted by mrr23
my tests were done with 200 n2o. but, it just really depends on how restricted the exhaust system is to begin with. and apparantly the stock y-pipe was the most restrictive part in the system. not the stock muffler.
Im with ya there..... ditched it when my LT's went on and ditched the cats also....... now comparing the cutout and my Hooker cat-back and there was a flow and power difference there..... even when i was N/A.
Kyle