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

Official IS-F Drag Time/Dyno Time/Performance Thread

Thread Tools
 
Search this Thread
 
Old 05-14-17, 08:36 AM
  #661  
SoulFreak
Instructor
iTrader: (1)
 
SoulFreak's Avatar
 
Join Date: Jul 2011
Location: Florida
Posts: 1,011
Received 36 Likes on 26 Posts
Default

KLexus50 that's an impressive time slip! Especially under the conditions you ran under. It's very apparent your car is making some serious F power. I can only imagine with an empty trunk, less fuel, better tires, decreasing R/T, and cutting that 60ft. I would also turn off all traction controls, but you must ensure that power to the ground is in check. Seen far too many cars smacking the wall during their runs. Good run! Thanks for sharing!
Old 05-14-17, 04:51 PM
  #662  
KLexus50
Driver
 
KLexus50's Avatar
 
Join Date: Oct 2014
Location: NJ
Posts: 106
Received 1 Like on 1 Post
Default

Originally Posted by SoulFreak
KLexus50 that's an impressive time slip! Especially under the conditions you ran under. It's very apparent your car is making some serious F power. I can only imagine with an empty trunk, less fuel, better tires, decreasing R/T, and cutting that 60ft. I would also turn off all traction controls, but you must ensure that power to the ground is in check. Seen far too many cars smacking the wall during their runs. Good run! Thanks for sharing!
Thanks, SoulFreak! I had all the nannys turned off on my first run but things almost went south shortly after launch. Wheel spin and hop was terrible in first, shaking the car violently. Then second continued to spin and bounce off the rev limiter. Shifting to third didn't help as it just kept on spinning and hitting the limiter while the rear got squirrely and started nudgeing me towards the wall. After that I wasn't about to take anymore chances, lol. My best R/T of the day was a .236; but I couldn't manage a better 60ft than the run in the picture.
Old 05-14-17, 05:09 PM
  #663  
tas02
Lexus Test Driver
iTrader: (2)
 
tas02's Avatar
 
Join Date: Jul 2015
Location: WA
Posts: 1,063
Received 31 Likes on 29 Posts
Default

Nice speed KLexus50. Diff. bushings (for the wheel hop) & drag radials should get you near 11.xx.
Old 05-14-17, 06:42 PM
  #664  
FFM
Racer
 
FFM's Avatar
 
Join Date: Nov 2014
Location: WA
Posts: 1,419
Received 133 Likes on 92 Posts
Default

RT has no relevance on your ET by the way. You can sit at the tree all night if you want to. Launch when ready.

Definitely sounds like you need stickier tires though. Hop is interesting. Something is a bit worn. Almost as if you are in and out of traction. Should be spinning or hooking.
Old 05-14-17, 06:54 PM
  #665  
SoulFreak
Instructor
iTrader: (1)
 
SoulFreak's Avatar
 
Join Date: Jul 2011
Location: Florida
Posts: 1,011
Received 36 Likes on 26 Posts
Default

Originally Posted by FFM
RT has no relevance on your ET by the way. You can sit at the tree all night if you want to. Launch when ready.

Definitely sounds like you need stickier tires though. Hop is interesting. Something is a bit worn. Almost as if you are in and out of traction. Should be spinning or hooking.
I stand corrected. This is absolutely true! RT indeed has no relevance on ET.
Old 05-14-17, 08:33 PM
  #666  
FFM
Racer
 
FFM's Avatar
 
Join Date: Nov 2014
Location: WA
Posts: 1,419
Received 133 Likes on 92 Posts
Default

No worries wasn't calling you out. There's just no reason to be rushed if you don't want to be. Only on a sanctioned event like brackets does the RT count
Old 05-15-17, 01:42 PM
  #667  
tas02
Lexus Test Driver
iTrader: (2)
 
tas02's Avatar
 
Join Date: Jul 2015
Location: WA
Posts: 1,063
Received 31 Likes on 29 Posts
Default

RT doesn't count if you don't mind losing to a slower car.
Old 05-27-17, 07:56 AM
  #668  
512ISF
Rookie
iTrader: (1)
 
512ISF's Avatar
 
Join Date: Mar 2016
Location: Texas
Posts: 51
Likes: 0
Received 0 Likes on 0 Posts
Default Bolt on ISF 1/4

Last night I made it out to San Antonio raceway.
2008 ISF
PPE Headers, Joe z elbow, rr racing tuned intake, tune, custom exhaust( more or less straight piped), and 275 continentals in the rear.
DA was +3500 the whole night and my intake temps were high the whole night.

I ended up with a best of 12.58 at 115.xx. I was hoping for a low 12. I never managed a sub 2 60ft

Do do you think the exhaust is holding me back be it there is no x or h pipe? Also I have not deleted the secondary cats.
Old 05-27-17, 10:59 AM
  #669  
tas02
Lexus Test Driver
iTrader: (2)
 
tas02's Avatar
 
Join Date: Jul 2015
Location: WA
Posts: 1,063
Received 31 Likes on 29 Posts
Default

512ISF, that's an excellent time considering the da. Noted that high ambient temps are in the mid 90's in your location.

Popular wisdom says an X or H pipe helps both sound & power. But then popular wisdom is not always "best". How do you like the way the car currently sounds?
Old 05-27-17, 11:20 AM
  #670  
512ISF
Rookie
iTrader: (1)
 
512ISF's Avatar
 
Join Date: Mar 2016
Location: Texas
Posts: 51
Likes: 0
Received 0 Likes on 0 Posts
Default

Originally Posted by tas02
512ISF, that's an excellent time considering the da. Noted that high ambient temps are in the mid 90's in your location.

Popular wisdom says an X or H pipe helps both sound & power. But then popular wisdom is not always "best". How do you like the way the car currently sounds?
It sounds menacing. I'm a fan of a powerful/loud exhaust. Sometimes it can be overbearing. At high rpms it screams like no other. At idle it almost sounds cammed. Extremely throaty and rumbly.
Old 05-31-17, 09:03 AM
  #671  
liquidtek
Advanced
 
liquidtek's Avatar
 
Join Date: Feb 2014
Location: CO
Posts: 635
Received 96 Likes on 59 Posts
Default

Sounds like you're hitting the limiter?
Old 07-30-17, 08:09 PM
  #672  
veee8
Rookie
 
veee8's Avatar
 
Join Date: Nov 2016
Location: Pennsylvania
Posts: 59
Likes: 0
Received 2 Likes on 2 Posts
Default

First time going to bimmerfest without a bmw
Anyway here are my best runs, it was pretty hot on the track.

My best runs seemed to be when I would just gun it on the light, previous runs I was trying to launch around 1k rpm.

How do you guys start off at the track? I'm debating whether to get headers next or a set of 18s and some MT et tires? I don't understand how people stock are getting 12.7s/12.6s

12.863 @ 112.50
60' - 2.060
Mods are - rr tune, xforce catback
I'm car #1011

Last edited by veee8; 07-31-17 at 05:34 AM.
Old 08-04-17, 09:12 PM
  #673  
Gymkata
Instructor
 
Gymkata's Avatar
 
Join Date: Dec 2009
Location: MD
Posts: 1,102
Received 28 Likes on 20 Posts
Default

I headed down to Capitol Raceway this evening. I ended up getting in 5 runs, all of which were slower than I would have liked. While it got cooler as the evening went on, the DA the entire evening was between 2100-2300+...booo. My first run ended up being my fastest...12.274 @118.69. I never slipped a tire, but no matter how I launched I couldn't drop into the 1.8X 60ft range. It was a fun evening though. There were Pro Mod quals going on...fastest time of the night was 5.89 @238!
Attached Thumbnails Official IS-F Drag Time/Dyno Time/Performance Thread-20170805_000213.jpg  
Old 08-05-17, 04:37 AM
  #674  
caymandive
11 Second Club

iTrader: (2)
 
caymandive's Avatar
 
Join Date: Dec 2005
Location: N.Va
Posts: 4,060
Received 62 Likes on 30 Posts
Default

Originally Posted by Gymkata
I headed down to Capitol Raceway this evening. I ended up getting in 5 runs, all of which were slower than I would have liked. While it got cooler as the evening went on, the DA the entire evening was between 2100-2300+...booo. My first run ended up being my fastest...12.274 @118.69. I never slipped a tire, but no matter how I launched I couldn't drop into the 1.8X 60ft range. It was a fun evening though. There were Pro Mod quals going on...fastest time of the night was 5.89 @238!
Very impressive times for the conditions dude! I'm guessing you didn't even have to use drag radials?
Old 08-05-17, 08:21 AM
  #675  
Gymkata
Instructor
 
Gymkata's Avatar
 
Join Date: Dec 2009
Location: MD
Posts: 1,102
Received 28 Likes on 20 Posts
Default

Originally Posted by caymandive
Very impressive times for the conditions dude! I'm guessing you didn't even have to use drag radials?
Thanks...I put my RE-71Rs on the rear...not a drag radial, but much stickier than a max performance summer tire when heated up.


Quick Reply: Official IS-F Drag Time/Dyno Time/Performance Thread



All times are GMT -7. The time now is 05:37 AM.