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

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Old 10-01-13, 08:14 PM   #1
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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?

....in 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

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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..
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Old 10-12-13, 07:22 PM   #2
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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
Old 10-12-13, 07:22 PM

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