Fast Intentions TDX Catback Exhaust Install Review with PICS!!

F.I. Inc. · 11-10-2009, 07:56 PM

O.K. here is my thoughts. Now, this specific car has:

Stillen Gen III intakes
Fast Intentions High Flow Cats
Fast Intentions TDX Cat Back Exhaust

Keep in mind, it is also a 7AT (Automatic Transmission)= A slightly higher percentage of drive train loss.

Now, I am the manufacture of the exhaust and I can tell you there is no way this car picked up 50 RWH (Rear Wheel Horsepower). Don't get me wrong, I wish this was the case but it is not. I think what happened was the car was originally dynoed in a lower gear 3rd or 4th for the baseline by accident. Now, from the number of roughly 306 which looks very accurate I know the car was dynoed in a 1:1 gear for the after session. The car showed very low numbers stock and this is what leads me to believe this about the gears.

Now, the cat back exhaust proven to make over 20 RWH and the HFC's are good for another 5-6 up top but the HFC's show their biggest contribution down low and in the mid range. As for the intakes well I would be satisfied if I saw 8-10 RWH from them! Now add this all up and you end up with 32-36 RWH on the high side. Lets be conservative and say these three mods compounded together will give you 28 RWH. Pretty respectable in my book. Now with all of this said, the number I just posted above will be slightly lower on the Automatics over the manual transmission.

This car dynoed in the correct gear should show a baseline of 268-280 RWH and once these mods are on we are seeing around 305-315. If anyone has any questions about what our exhaust actually dynos, just check out this link:

The Fast Intentions Inc. Exhaust sale...Pictures,Prices,Videos,Dynos & Sound Clips!!!

On a side note:

Eric,

The car looks great with the exhaust. Thank you for being patient throughout the fiasco with UPS. Do not hesitate to ask if you need anything...

Thank you, Tony
Fast Intentions Inc.
(818) 882-2788

Nick911sc · 11-10-2009, 08:06 PM

ah, that makes sense about the gear ratio. I knew something seemed a little out of place. Can't wait to hear this exhaust in person! Once I do I know I'll HAVE to buy it

G35guy84 · 11-10-2009, 08:43 PM

Thanks, Tony. Again, I appreciate everything you've done for me! Good luck with the long-tube headers!!

mpp9 · 11-11-2009, 02:13 AM

I think 50 is on the high side too but I wouldn't doubt the true number is closer to that than 28. I think there's alot of variables with this car on the dyno. The oil temp. issue makes it hard to get repeatable numbers, some people's cars seem to take longer to learn the mods than others (ecu reset vs. learn), and the intakes are problematic to measure results since dynos won't be able to simulate the amount of air when at speed. Either way if there's a noticeable enough difference in how the car pulls that's better than any dyno result. I remember Z eliminator being disappointed with his dyno results and him later posting that he had to be making well over what the dyno told him, which is hard to deny since he ran a 12.8 at 110 with poor traction. Granted he has the better gearing also.

11-10-2009, 07:56 PM	#1 (permalink)
F.I. Inc. The370Z.com Sponsor Join Date: Feb 2009 Location: Simi Valley, CA Posts: 2,989 Drives: 2010 GT-R/2007 F-250 Rep Power: 687	O.K. here is my thoughts. Now, this specific car has: Stillen Gen III intakes Fast Intentions High Flow Cats Fast Intentions TDX Cat Back Exhaust Keep in mind, it is also a 7AT (Automatic Transmission)= A slightly higher percentage of drive train loss. Now, I am the manufacture of the exhaust and I can tell you there is no way this car picked up 50 RWH (Rear Wheel Horsepower). Don't get me wrong, I wish this was the case but it is not. I think what happened was the car was originally dynoed in a lower gear 3rd or 4th for the baseline by accident. Now, from the number of roughly 306 which looks very accurate I know the car was dynoed in a 1:1 gear for the after session. The car showed very low numbers stock and this is what leads me to believe this about the gears. Now, the cat back exhaust proven to make over 20 RWH and the HFC's are good for another 5-6 up top but the HFC's show their biggest contribution down low and in the mid range. As for the intakes well I would be satisfied if I saw 8-10 RWH from them! Now add this all up and you end up with 32-36 RWH on the high side. Lets be conservative and say these three mods compounded together will give you 28 RWH. Pretty respectable in my book. Now with all of this said, the number I just posted above will be slightly lower on the Automatics over the manual transmission. This car dynoed in the correct gear should show a baseline of 268-280 RWH and once these mods are on we are seeing around 305-315. If anyone has any questions about what our exhaust actually dynos, just check out this link: The Fast Intentions Inc. Exhaust sale...Pictures,Prices,Videos,Dynos & Sound Clips!!! On a side note: Eric, The car looks great with the exhaust. Thank you for being patient throughout the fiasco with UPS. Do not hesitate to ask if you need anything... Thank you, Tony Fast Intentions Inc. (818) 882-2788 __________________ *Follow us on Facebook: Fast Intentions Inc.* Phone: (805) 522-FAST (3278) Email: tony@fastintentions.com www.fastintentions.com "FUELED BY PASSION"

11-10-2009, 08:43 PM	#3 (permalink)
G35guy84 Enthusiast Member Join Date: Aug 2009 Location: New York Posts: 305 Drives: '09 370Z 7AT Sprt PW Rep Power: 17	Thanks, Tony. Again, I appreciate everything you've done for me! Good luck with the long-tube headers!! __________________ '09 Nissan 370Z Base 7AT - Sport Package - Pearl White \| Performance Mods: Stillen G3 CAI \| F.I. HFC \| F.I. TDX CBE w/ 18" resonators \| Megan Racing coilover kit \| Ichiba rear camber kit \| 20mm front / 25mm rear H&R spacers \| Aesthetic Mods: White interior/license plate LEDs \| 6000K bulbs \| 20% tint

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11-10-2009, 08:06 PM	#2 (permalink)
Nick911sc A True Z Fanatic Join Date: Feb 2009 Location: Long Island, New York Posts: 1,698 Drives: 2010 Nissan GT-R Rep Power: 22	ah, that makes sense about the gear ratio. I knew something seemed a little out of place. Can't wait to hear this exhaust in person! Once I do I know I'll HAVE to buy it

11-11-2009, 02:13 AM	#4 (permalink)
mpp9 Base Member Join Date: Apr 2009 Location: Pittsburgh Posts: 103 Drives: 2012 sti Rep Power: 18	I think 50 is on the high side too but I wouldn't doubt the true number is closer to that than 28. I think there's alot of variables with this car on the dyno. The oil temp. issue makes it hard to get repeatable numbers, some people's cars seem to take longer to learn the mods than others (ecu reset vs. learn), and the intakes are problematic to measure results since dynos won't be able to simulate the amount of air when at speed. Either way if there's a noticeable enough difference in how the car pulls that's better than any dyno result. I remember Z eliminator being disappointed with his dyno results and him later posting that he had to be making well over what the dyno told him, which is hard to deny since he ran a 12.8 at 110 with poor traction. Granted he has the better gearing also.