IS F (2008-2014) Discussion topics related to the IS F model

Racing fuel 100/110 octane

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Old 10-18-12, 08:50 PM
  #31  
08F
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You're not going to see a difference in performance, just smell
Old 10-19-12, 06:57 AM
  #32  
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Originally Posted by ISF4SALE
You're not going to see a difference in performance, just smell
Yeah, maybe someone will pull up next to me at a light, roll down the window and say, "Dude, your F smells badass!".
Old 10-20-12, 06:00 AM
  #33  
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I have also run Ms109 when using large nitrous shots and have had great success, defiantly noticeable gains.
Old 10-20-12, 10:17 AM
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Originally Posted by darbs242
I have also run Ms109 when using large nitrous shots and have had great success, defiantly noticeable gains.
What size shot were you spraying when you ran a 11.6

Last edited by Petshark; 10-20-12 at 10:23 AM.
Old 10-21-12, 02:03 PM
  #35  
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Originally Posted by Petshark
What size shot were you spraying when you ran a 11.6
I have accomplished 11.6 with a 100 shot. still testing some new changes with the race gas, bigger shots and a new nitrous controller
Old 10-21-12, 02:16 PM
  #36  
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Originally Posted by darbs242
I have accomplished 11.6 with a 100 shot. still testing some new changes with the race gas, bigger shots and a new nitrous controller
I think your jetting calculation is a little off after seeing your whp. A 100 shot should put 100 to the wheels and like 124 to the crank. I'm all stock except intake and a 150 shot on 93 and I am at a low 11. I see you have headers and some other stuff I don't. I also have about 350 extra pounds in the trunk lol., I think your car is capable of low low 11s if you had an actual 100 shot on it.

Last edited by Petshark; 10-21-12 at 02:21 PM.
Old 10-21-12, 02:46 PM
  #37  
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Originally Posted by Petshark
I think your jetting calculation is a little off after seeing your whp. A 100 shot should put 100 to the wheels and like 124 to the crank. I'm all stock except intake and a 150 shot on 93 and I am at a low 11. I see you have headers and some other stuff I don't. I also have about 350 extra pounds in the trunk lol., I think your car is capable of low low 11s if you had an actual 100 shot on it.
I think its a real 100 shot, i just haven't had the best luck with traction. its my 60fts that are struggling
Old 10-21-12, 11:59 PM
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Originally Posted by darbs242
I think its a real 100 shot, i just haven't had the best luck with traction. its my 60fts that are struggling
What are your tire dimensions and what tires?

Last edited by Petshark; 10-22-12 at 04:52 PM.
Old 10-22-12, 05:17 AM
  #39  
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Originally Posted by Petshark
I think your jetting calculation is a little off after seeing your whp. A 100 shot should put 100 to the wheels and like 124 to the crank. I'm all stock except intake and a 150 shot on 93 and I am at a low 11. I see you have headers and some other stuff I don't. I also have about 350 extra pounds in the trunk lol., I think your car is capable of low low 11s if you had an actual 100 shot on it.
The nitrous "shot" is usually calculated at the motor.

Your spraying 150 to the wheels with only an intake? If so, your asking for serious trouble.
Old 10-22-12, 11:49 AM
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Originally Posted by MRxSLAYx
The nitrous "shot" is usually calculated at the motor.

Your spraying 150 to the wheels with only an intake? If so, your asking for serious trouble.
What else am I going to do? Runs great.. I check plugs all the time. A/F is always around 11 little fat to play it safe and I am always monitor it when I am spraying. I've probably sprayed about 50lbs and haven't had any issues or even any knocking. A 150 shot is 150hp to the wheels. I've never heard of it being calculated at the motor but either way you look at it everything is forged so I don't see why it can't handle it. I'll be dynoing it this week so ill let you know exact number

Last edited by Petshark; 10-22-12 at 11:57 AM.
Old 10-22-12, 01:56 PM
  #41  
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Originally Posted by Petshark
What else am I going to do? Runs great.. I check plugs all the time. A/F is always around 11 little fat to play it safe and I am always monitor it when I am spraying. I've probably sprayed about 50lbs and haven't had any issues or even any knocking. A 150 shot is 150hp to the wheels. I've never heard of it being calculated at the motor but either way you look at it everything is forged so I don't see why it can't handle it. I'll be dynoing it this week so ill let you know exact number
The problem is exhaust gas temperature. With the stock exhaust, your EGTs are going to be unsafely high running a 175 shot. Its something that you can do and hope nothing goes wrong, but something I would be very mindful of.
Old 10-22-12, 04:06 PM
  #42  
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Originally Posted by MRxSLAYx
The problem is exhaust gas temperature. With the stock exhaust, your EGTs are going to be unsafely high running a 175 shot. Its something that you can do and hope nothing goes wrong, but something I would be very mindful of.
Spraying nitrous period on these cars is a risk lol. Just have to be responsible with it. I'm making my exhaust next week anyways so I won't have to worry about that soon. Oh and I think the previous owner did something to the exhaust but not sure. I noticed mine doesn't ever go to single exhaust and it doesn't have that crushed y at the end, it stays a true duel all the way to the rear.

Last edited by Petshark; 10-22-12 at 04:10 PM.
Old 10-22-12, 05:10 PM
  #43  
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Originally Posted by Petshark
Spraying nitrous period on these cars is a risk lol. Just have to be responsible with it. I'm making my exhaust next week anyways so I won't have to worry about that soon. Oh and I think the previous owner did something to the exhaust but not sure. I noticed mine doesn't ever go to single exhaust and it doesn't have that crushed y at the end, it stays a true duel all the way to the rear.
Ya definitely modded. I would recommend getting rid of the cats. Do that and you'll be problem free as long as the tune is good.
Old 10-22-12, 05:52 PM
  #44  
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I'll post the dyno runs before and after when I'm done. I was planning on eliminating secondary cats but should I eliminate all of them
Old 10-22-12, 06:05 PM
  #45  
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My hp looks low for 100 shot because i ported my intake manifold which daily driving NA gives me more low end tq which is great but it hurt larger power up top when spraying because i slowed port velocity.


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