| Other Japanese Supercars Toyota Supra, Honda NSX, Maxda RX-7 etc. |
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06-17-2009, 02:34 PM
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#1
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Former Vendor
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Join Date: Dec 2008
Location: Miami
Posts: 658
Rep Power: 43
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New IS-F Exhaust by ISS Performance
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06-17-2009, 04:26 PM
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#2
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Registered User
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Join Date: Oct 2005
Location: Houston, TX
Posts: 1,855
Rep Power: 127
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Typical gains from an exhaust are 20-25 rwhp, what did you guys do differently to achieve 33 rwhp gain? The exhaust looks great from behind, any under car pics?
Peter
__________________
1998 Toyota Supra
1,000+rwhp
2009 Lexus ISF
2009 BMW X5 4.8i Premium/Sport/Technology
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06-17-2009, 04:31 PM
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#3
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Former Vendor
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Join Date: Dec 2008
Location: Miami
Posts: 658
Rep Power: 43
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We reduced flow restriction, added an x pipe, created a quad muffler system and the rest just happen.
Thanks
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06-17-2009, 04:32 PM
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#4
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Former Vendor
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Join Date: Dec 2008
Location: Miami
Posts: 658
Rep Power: 43
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Here is the Dyno sheet
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06-17-2009, 08:50 PM
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#5
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Registered User
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Join Date: Aug 2008
Location: sarasota and orlando, fl
Posts: 431
Rep Power: 19
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one thing i hate about the ISF are the stacked oval exhaust pipes......i like this quad setup a lot better, and the gains are huge!
any under-car pics? or off the car? id like to check it out.
__________________
93 RX7 Brilliant Black
My tombstone will read "I spent 90% of my money on women, cars, and booze. The other 10% I wasted.
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06-17-2009, 09:11 PM
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#6
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Former Vendor
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Join Date: Dec 2008
Location: Miami
Posts: 658
Rep Power: 43
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06-17-2009, 09:12 PM
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#7
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Former Vendor
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Join Date: Dec 2008
Location: Miami
Posts: 658
Rep Power: 43
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It's a prototype so the finished product is going to be in polished stainless and tig welded. We will also offer a ceramic coated option.
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06-17-2009, 09:25 PM
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#8
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Registered User
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Join Date: Oct 2007
Location: Augusta, Ga
Age: 25
Posts: 621
Rep Power: 41
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How is the exhaust note? The stock isf can sound pretty beastly so this must be awesome.
__________________
Your teacher wants you to go slow, and she's wrong because it's the fastest who get paid and it's the fastest who get laid. ~ Reese Bobby
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06-18-2009, 11:10 AM
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#10
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Banned
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Join Date: May 2009
Location: West Palm Beach, FL
Posts: 22
Rep Power: 0
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Good job guys. Impressive gains.
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06-18-2009, 01:44 PM
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#11
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Former Vendor
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Join Date: Dec 2008
Location: Miami
Posts: 658
Rep Power: 43
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Thanks Andy. As soon as we finish the final product I'll take it by your shop.
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06-19-2009, 09:44 AM
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#13
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Registered User
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Join Date: Oct 2005
Location: Houston, TX
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What were the SAE corrected numbers (smoothing 5)? We all know that the STD correction factor artificially inflates the dyno numbers.
Peter
__________________
1998 Toyota Supra
1,000+rwhp
2009 Lexus ISF
2009 BMW X5 4.8i Premium/Sport/Technology
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06-19-2009, 10:13 AM
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#14
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Former Vendor
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Join Date: Dec 2008
Location: Miami
Posts: 658
Rep Power: 43
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That's why we're claiming 25 to 30 HP increase. You know under promise over deliver. Not trying to go for the full 33hp shown on the dyno sheet.
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06-19-2009, 12:37 PM
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#15
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Registered User
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Join Date: Oct 2005
Location: Houston, TX
Posts: 1,855
Rep Power: 127
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So what were the SAE corrected numbers at 5 smoothing...
Peter
__________________
1998 Toyota Supra
1,000+rwhp
2009 Lexus ISF
2009 BMW X5 4.8i Premium/Sport/Technology
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Tags
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09, cf, exaust, exhaust, exhauts, forged, isf, iss, parts, performance, quad, sae, smoothing, stock, system  |
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