What's your 1/4 mile time with bolt on I/H/E?
 

I have 2008 IS350 with Afe Stage 2 intake and Tanabe Exhaust. Was thinking about getting PPE header next. And wonder if it make different in 1/4 miles time or felt the 15 HP gain?

mine with Suruga Speed Intake + Invidia mid + Greddy axelback setup was doing 13.7sec from 0-400meters(0.248miles) havn't measure it again with ARK exhaust setup... i think i was doing a lower time with HKS Hi-power Axel Back..

Please keep us updated when you get a chance for another run.

When i had my is350, all i had was an F sport intake and i ran 13.6 1/4 mile. Later i added a custom exhaust but never had a chance to go back......i've upgraded to the ISF.

Im also thinking of upgrading to ISF. But I do like IS350.

Then you'll love the isf. Like idoke, I went from a 350 to F. It's everything the 350 is but on steroids.

I was thinking IS350 or IS F before. Should've got IS F instead. It's good price now under $30k. I had test drove my friends has 2010 IS F before.

so i had time today to see what i got for 1/4mile with ARK exhaust + Suruga Intake + Blitz filter... w/ my pivot speed v the 1/4mile 13.3 sec, OAT was 23C...

Nice run low 13sec is my goal.

i am trying to get some more out of it too.. i might have to end up going back to HKS and suffer the drone to get the times down...

That's a nice run! What rpm did you launch at and how much gas did you have in the tank?

Running on stock wheels?

Most people launch at 1500 rpm and 1/4 gas of tank.

Not a 1/4 pass, but shows us all what a healthy IS350 motor can do with just a SRI :

https://www.clublexus.com/forums/per...-81-81mph.html

Next step is weigh reduction (anything in the trunk, passenger/back seats, lightweight wheels) PLUS drag radials with a 50-shot!