Quote:
Originally Posted by Dan37Tz
While I agree I'd put my money on the M also if it was compared to an early 08-09 ISF, for 2011+ Lexus gave it a full suspension and steering overhaul, the 2011+ ISF is actually about 9 seconds faster PER LAP at VIR compared to the 2008-2009 ISF.
2011+ ISF is actually quicker than an E92 M3 and more than a second quicker than the C63 AMG on Car and Driver's Lightning Lap test. It also made it on Car and Drivers top 10 Fastest Sedans in Lightning Lap History. The E90 M3 did not make the list.
An E92 M3 Competition Package equipped on Pilot Sport Cup+ track tires tied the 2011+ ISF's VIR lightning lap time which btw the ISF was running on regular summer tires. 
As far as power gains are concerned, ISF puts down about 400whp with just header and exhaust. The guys over on CL are getting baselines before the tune and they're around 405-410WHP DynoJet, 440-450whp with I/H/E and tune is what they are estimating.
What's ironic is they're doing all their dyno testing at EAS.  |
9 seconds? that is nuts. i didn't know the 11's were so much better. time to do some reading. that is some major upgrading. i'd hate to own an early car only to find out the updated one is SO much better.