Track speed Tranmsision shift 5th gear to long....? - Club Lexus Forums

Go Back   Club Lexus Forums > Lexus Model Forums > IS Models > IS F (2008-2014)
Log In 

Track speed Tranmsision shift 5th gear to long....?

Thread Tools Search this Thread
Old 10-01-13, 08:14 PM   #1
Lexus Test Driver
Trader Score: (1)
Join Date: Jan 2004
Location: Canada
Posts: 944
Default Track speed Tranmsision shift 5th gear to long....?

Hope I explain this correctly.

Just finished another track day (Mosport - Canada) and have a weird power band issue...just wondering if its normal?

On the track straight away (10 degree incline - about 1 mile), I can get to about 220 kph (about 136mph) but 5th gear is really long and slow...once red line and ..up-shifting to 6 - and there is all kinds of crazy power and is immediate, responsive and the car starts taking off very quickly.......It took a few track days to realize this? sport mode, and sprint booster (red - 2nd setting) - I have tried with sprint booster off - no differences.

Your thoughts......some sort of heat soak......if 5th gear would red line quicker, higher speeds are possible....because I run out of track by 6th gear.

at these speeds I do not have time to look at my gauges, so only periodic glances - coolant temp normal, oil temp 4-5 bars - temperature was 25 degrees Celsius/ about 82

essentially 5th gear is eating all of my track length to get to 6th and 136mph is very short lived

2008 IS F Series 2/ Mercury Metallic 1F2/ Joe Z/ aFe/ Garax 6K/ Volk VR G2 19"/ F-Sport Rear Sway/ ISS Forged DES/ BCR/ Beatsonic/Sprint Booster/ Wald Rear Diffuser/ Wald Spoiler
2012 Lexus CT200h Fire Agate Pearl
2001 Lexus IS300 Solar Yellow- Sold
2001 Lexus IS300 Ltuned Stage 2 (Stolted) - sold

Last edited by digger08; 10-01-13 at 08:23 PM.
digger08 is offline   Reply With Quote
Old 10-12-13, 07:22 PM   #2
Driver School Candidate
Trader Score: (0)
Join Date: Jan 2012
Location: BC
Posts: 33

you are WOT i assume, which is why your sprint booster being on/off doesn't make a difference.

I find 5th gear acceleration is still pretty lively in my car, I'm not sure why you'd feel less in 5th compared to 6th. Something wrong with your car?
nsx042003 is offline   Reply With Quote

Similar Threads
Thread Thread Starter Forum Replies Last Post
Transmission 'hunting' while on downgrade with radar cruise enabled LeapFrog IS - 3rd Gen (2014-present) 0 06-07-15 11:22 AM
3M Paint Defender digger08 IS F (2008-2014) 42 06-22-14 09:52 PM
Car downshifts into 5th on the freeway if I touch the brakes cwtt IS - 2nd Gen (2006-2013) 25 08-16-12 08:32 PM
2012 Chevrolet Camaro ZL1 Coupe Hoovey2411 Car Chat 5 08-10-12 06:15 AM
My Sprint Booster Review for 2006 IS350 RRocket Performance 12 08-07-10 02:31 PM

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Forum Jump

All times are GMT -7. The time now is 09:58 PM.

Copyright © 2000-2015 Internet Brands, Inc. All Rights Reserved
Privacy Policy | Disclaimer | Terms of Use | JOBS