Ramon

I can understand some of the skepticism about a hood being opened, but I don't see the problem with using a fan. After all, when you're moving there is plenty of wind blowing, probably more than a fan would even be able to simulate. Everything else being equal (which it will be during this testing) higher HP/Torque numbers will yield better acceleration, unless you're only making slightly higher PEAK hp but are generally lower in other parts of the RPM range, but the dyno will show the HP/Torque numbers throughout the rev range, so that isn't an issue.

lobuxracer

iTrader: (2)

I totally get the whole thing. I've done a lot of this stuff before. The problem with the fans and the hood being open is the air in the engine compartment isn't the same temp it will be with the hood down and the car moving. There's about 306 hp worth of heat being blown into the engine compartment at WOT. Basic thermodynamics -1/3 is kinetic energy, 1/3 is heat out the exhaust (which is why turbos work), and 1/3 goes into the cooling system to get shed from the radiator. You can't simulate that on a dyno.

There's no doubt we'll see results, but they'll be what the car does on the dyno.

Anyway - there are three intakes being tested? They cost what each? Any way I could get all three to take to Sac Raceway on a Friday Test n' Tune and do a few runs down the track for mph to determine a real winner?

I'll be happy to post results and send them all back to their manufacturers because I can't afford to run non-CARB approved stuff in SacTown. Anyone who lives here has seen the crack down, and people I know have been pulled over just for wheels and lowered suspension. All my cars pass a hood lift inspection with ease...

Ramon

Ryan has already stated that he will do dyno pulls with the hood closed as well... So that is no longer an issue.

lobuxracer

iTrader: (2)

Even stock powered Supras have this problem. One of the magazines had the hood blow open at speed because they didn't get both latches locked when they closed the hood of their test car. It's just really pronounced in that video.

Thanks for putting the effort into this. Even though I'm a skeptic, I know doing this kind of testing is an arduous task, and if I seem unappreciative, I'm not. I know the guys with the dyno could be better served by paying customers, so my hat is off to rt350 for his contribution. Thanks in advance, and I'm looking forward to the results. Any chance of getting an E.O. number for any of them?

rt350

A.R.B. application was turned in October 2005 for most of our intake systems. IS350 was turned in already for sure. i have seen an EO take as long as a year. Keep in mind, it has been 10 months and we are still waiting. We received confirmation that the application was received but that ARB is backed up.

lobuxracer

iTrader: (2)

Awesome. Thanks for the reply. I've been waiting nearly two years for the CARB approved single turbo for my Supra. I know how slow they are.

thegrunt

I just installed the Fujita intake on my IS350 and now my check engine light comes on followed by VSC lights. The warning lights do eventually go off, but they come right back on after a day or two. I’ve taken it to the local Lexus dealership 3 times, the last two times they told me the computer code says it’s burning too lean. They checked installation and found no problems. The dealer gave me the error code. I have pictures of the install and warning lights. Does any one else have these problems?

MeTrO

So far, I haven't had any problems at all. I've had mine on for a few days now. When did you start noticing problems?

The VSC light?? Sounds like you might have something else going on.

flyfl1pguy

iTrader: (2)

Installing the intake wasn't that hard right?

JDM IS350

Hey Metro,

how did that Fujita air intake work out for you? I noticed your from the state of Nevada? are you from Las Vegas also? Anyways i was thinkin of picken up a Fujita as well for my is350.

just wondering how it worked out for you?

rt350

I have never seen anybody get a CEL on an IS350. Email us a photo to info@*****.com attn: R&D. We will take a look right away. We have sold many of these and this is a first.

MeTrO

I love it. It's got a great sound to it and it really seems to add acceleration. Yes, I am in Vegas too.

Fly, it was really easy to install. After I figured out there were two different size clamps (wasted 20 minutes), it only took me about another 20 minutes to install. It would only take me about 15 to do another one.

I'm excited about the dyno results today.....I haven't had any CEL issues, and I have been romping on it pretty good. I would be curious to know what is causing 'thegrunts' problems.....also weird this is the first he's posted about it.

lobuxracer

iTrader: (2)

Sounds like an air leak after the MAF. Your Vf (correction factor) needs to be consistently more than +/- 10% to trigger a CEL. I'd bet it's an install problem.

integlikew

Agreed! if any air gets into the tube between the intake manifold and the mass air flow sensor (MAF) that would set a light. If a connector was knocked loose or left loose that too. But other then those 2 options there is no way the intake could cause a code. Either a minor install error or a problem not related to the intake. some things i would check would be the rubber connecting the pipe to the intake manifold for cuts, tears or maybe the bottom rolled over and didnt go over the pipe like the top did. Also chekc the tube for any possible air leaks (crack, pin hole). Check MAS connections and any other connectors or wires near the intake. If none of this helps remove intake but back to stock see if problem is gone or returns. If problem returns leave vechile stock and take back into dealer under warr and have them fix it. If problem doesnt return, have someone look closer at the intake for defects or send intake back for exchange. Most likey its an install problem or a problem not related to the intake.

tonyxcom

I think its impossible to quantify intake HP results. You can run the same car on any dyno 5 times and get 5 different numbers +/- 5hp. Swap intakes all day long and you get the same thing.

Also, 2 differnet results from 2 different days with 2 different intakes is laughable, especially when the difference is 5hp.

I think it is also impossible to use timed performance runs to quantify these results. That introduces another 100 or so variables into the equation.

When you are dealing with something that "might" ad so little horsepower, its just impossible (IMO) to proove if it works or not.