Lexus ISF at the drag strip. 12.3 at 115 quarter mile run! 

Felix Hernandez I definitely think so, people with gutted cats seem to get like 70% of the results of headers. As far as the rev limit, with the tune you can pick stock at 6800, 7200, or even 7400. I think the 7200 is a nice yet safe bump. Gives you just a little more room to shift at 7k or so without having to shift too early. Especially with the torque bump from 2k-6k the powerband is thicker and you can stay in it.

Checking the DA calculator online it says 1105 feet and 96.81% relative density. track elevation 41 ft above sea level, air temp 75.

Bee Xiong light burnout in the wet box, sport mode on, full traction control off, manual mode using paddles, just floor it and hang on. No banging off the limiter. No brake boosting.

The catback deleted two secondary cats and generally is good for 10-15whp. Intake is really just an air filter and a shinier elbow. Lighter wheels with wider tires.

@@valdaviper1 Intake alone does nothing, but intake with tune is usually worth a few. Then again I’m used to FI cars, I know N/A may be less potentially.

@@Paranormal_Code Yes, the intake elbow I have is just a slightly smoother design and debated online for 4-5whp at the most, more likely nothing. There is one better intake with an open air filter available with a wider MAF pipe and needs a tune but its recommended only with headers and on my newer 12 ISF with headers I had it but had more issues with it than it was worth. Random bogging and heat soak issues. The biggest gain on these cars is headers for about 30-35whp, then catback for 10-15, maybe even 20, and a tune that smooths it all out and adds at most another 10whp. Generally on a dynojet they're stock 360whp cars, around 420 with headers catback tune, and if you add the fancier intake and have perfect conditions up to 435whp. For this specific video I listed all mods only because it was a surprisingly low ISF time for what's basically just catback and a tune. Some FBO F's with worse tires get this time, and some didn't believe it so I put every mod, even the 93 fuel lol. My newer ISF ran 11.9 on street and 11.7 on slicks with the previous owner, but I have yet to take it to the strip and have swapped a few items as well. Hoping to beat it though.

@@Paranormal_Code Actually, the ecu on these cars have complex kclv's and are able to adjust and retune themselves to minor mods like that. The only time you need to use a tune is if you're upsetting massive parameters like throttle body diameter or adding boost.