is the Electric Cutoutworth the money?
Thread Starter
Joined: May 2004
Posts: 272
Likes: 0
From: Houston,TX
is the Electric Cutoutworth the money? i have a 2001 with :
lid and k&n filter
high flow bellows
G5X3
pp gold springs
160 stat
hooker header y pipe and cat back
m/t drag tiers
lowered 1" with bmr & anti squat
spec stage 3 clutch
tnt f1 kit
how many rwhp the Electric Cutout might add?"no dynos around my country"
lots of nice cars expensive exotic ones to race and beat
lid and k&n filter
high flow bellows
G5X3
pp gold springs
160 stat
hooker header y pipe and cat back
m/t drag tiers
lowered 1" with bmr & anti squat
spec stage 3 clutch
tnt f1 kit
how many rwhp the Electric Cutout might add?"no dynos around my country"
lots of nice cars expensive exotic ones to race and beat
TECH Enthusiast
Joined: Apr 2004
Posts: 749
Likes: 0
From: Chandler, Arizona
I have the Street Pro Electric Cutout and love it. Very well made. I decided to spend a little extra because of the failures I read about on the others. Plus, the Street Pro has much better ground clearance.
As far as performance, I lost 25 hp when closing my cutout with a stock exhaust on my 2001 with back to back dyno pulls.
As far as performance, I lost 25 hp when closing my cutout with a stock exhaust on my 2001 with back to back dyno pulls.
On The Tree
Joined: May 2004
Posts: 134
Likes: 0
From: Birmingham, AL
RWHP Gain From Cutouts ? We have been shown Dyno results on a number of applications from all over the country by car owners using our Street Pro cutout -- Anthing from Vets with the LS1 Edit done to F-Body's with max mods done and "sniffing drugs" --- the results are very consisatant at a 6% to 9% gain in RWHP on Open exhaust VS. Closed exhaust -- Hope that helps -- 
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TECH Fanatic
Joined: Oct 2002
Posts: 1,648
Likes: 0
From: F.H,Waterford,Port Huron, MI
I say it depends, If you have a stock cat back or exhaust system then yes but If you have a good exhaust then no! Sorry but 6hp isn't that much I would rather have a nice flowing dumped exhaust! A friend of mine told me to do 2 electronic cut outs before my Y-pipe! the shop said that I would be very luckly to even see a hp gain from it! As my exhaust is 3" stainless y to a 12" bullet dumped before the axle! But that is also on a turbo car!
Originally Posted by Street Pro
We have been shown Dyno results on a number of applications from all over the country by car owners using our Street Pro cutout -- Anthing from Vets with the LS1 Edit done to F-Body's with max mods done and "sniffing drugs" --- the results are very consisatant at a 6% to 9% gain in RWHP on Open exhaust VS. Closed exhaust -- Hope that helps --
Beyond having to respond the above claim...the words "very consistant" are misleading.
I added a 3" cut out to a 427 RWHP Cartek stage two x set-up with QTP headers, Y, and stock muffler and tail exhaust. I ran 11 times at the track that day...Opening the cutout every other run and guess what... nothing noteable... I certainly cant even say I picked up half a 10th. I have seen 7-12 HP and a good amount more on boosted cars.
There is no question the street pro is the nicest available however.
Last edited by Jammer; Aug 26, 2004 at 11:41 PM.
TECH Apprentice
Joined: Apr 2003
Posts: 375
Likes: 0
From: Houston, TX
I just got a Street Pro to replace a previous one by a certain other company that stopped maintaining any kind of a seal, and I really love it. I had a turndown put on the end of it and it really made a difference in the sound. It's not nearly as loud in the cabin, but it sounds deeper, and I think it's just as loud from the outside. As far as performance, I'll have hard dyno numbers next week.
Originally Posted by MuTiLaToR
so is is possible to install a electric cut out on a stock exhaust system w/o aftermarket headers??
Originally Posted by hoserack
I put a 4" on my 422 and it absolutely rocks.
Street Pro makes a very good product and it works perfectly.
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Street Pro makes a very good product and it works perfectly.
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