headers are available, for the 250. even those might be illegal due to cat removal, but they definitely are illegal on the 350 due to cat removal. even the highest gaining exhausts for our car are illegal due to secondary cat removal.

there just isn't a whole lot we can do to this engine without some experience team ripping it apart and seeing what its really made of, and not carrying about the $10k slip-up that breaks it.

oh $h1t Lexus canceled that team.

there are some parts that could and should be made like the guy who made the A/F ratio controller and a handful of other parts, but like it was said before some companies just don't see a market in our car compared to others. its not about how much money you're customers have its how many customers do you have.

 

Yea and those headers have never even been tested. It's like they almost came out before the car did. Hell, they are advertised for both the IS250 and the IS350.

 

Where was I *****ing about our cars having 11:8:1? I am actually stoked that they do. There was no where I was saying that was a bad thing. I was just saying that is one of the reasons why there is not that many after market performance mods which is what this thread is supposed to be about.

 

I dont see why you couldnt run headers with high flow aftermarket cats if someone would just make them. Its probably just that no one wants to put any R&D into the IS for other companies to copy their products.

This is probably a really stupid question since the only cars I have ever fixed up are V8s, but is there any HP to be made from a port and polishing of the cylinder heads on this type of car?

 

Yes guys there are headers for the 2IS in case any were wondering. You just have to search.

http://www.meganracing.com/products/...d=466&catid=67
I believe that Fujitsubo also already has or has a header in development. I saw pics over on .net over a year ago with Fujitsubo headers with the cats built in to them.

Yes port and polishing does give you increases on a 2IS however you can't just do that and expect your car to be a beast. For very noticeable gains you would need to build up the whole head.

You're right, NA engines and engine management systems are getting more and more advanced. But it's the tasks of the aftermarket companies to keep up with the demand. But thats the key thing. If the demand isn't high enough, there is no point in these companies spending money on R&D if there isn't going to significant return.

With no more Team Lexus, the average consumer doesn't make the connection between potential performance of the 2IS with the production 2IS. That was the whole point of T/L's existence. To bridge the group between the AVERAGE consumer and performance. You can argue that Lexus has done this with the Grand-Am prototypes, however visually the average joe can't look a Lexus Prototype and have a light go off in their and say "hey I can apply the same stuff from this racecar to my street car." But with a car that looks similar to their street car, the connection is more easily visible.

 

Those headers were designed off of the IS250. I think the headers for the IS350 are a larger diameter, but they only sell them for one diameter. Besides, theres been 0 testing done on them.

No one know's anything about the Fujitsubo headers (are they even out yet?). The price of their exhaust system is insane, so I wouldn't even want to imagine what the price for the headers would be.

 

I have to say that I agree with this most of all. High compression is a great thing. HC NA engines are much more reliable in terms of long term use. FI is cool in all, but how many of you have friends that have and work on a FI anything. For the most part when they start really playing with it, the majority of the time their car is NOT running. Especially if its a car that didn't come with a factory turbo. Case in point there are a lot of 1IS owners that don't or can't run their cars year round either because their car isn't running due to FI issues or because they are aware of the issues and for reliability sake chose not to run their cars for long periods of time.

Its really a matter of supply and demand. You can't make a good comparison between the 1IS and the 2IS in terms of available performance mods either. You have to take into consideration that the 1IS power plant roughly 16 years old and spread over 5 platforms....1SC, 1GS, 2GS, 1IS, and MK4 Supra. Thats a very large consumer base, as well as a ton of supply and demand for 5 cars that share 1 power plant spread over 16 years . There isn't a great enough demand for FI in the 2IS YET. You must be patient. There are enough suspension mods out there for you to play with to set up the car the right way first before getting into FI. BBK's are coming out, and slowly but surely more engine mods are becoming available. But with little OVERALL demand, it's going to be a slow process.

 

Yes I know there's zero testing however I'm just putting it out there that headers are in the works.

And yes the Fujitsubo exhaust is expensive as all hell, but so are all exhausts cat-back systems for the 2IS. I know cost is always a consumer issue, but we don't have Hondas here, so no exhausts systems won't cost $300-400. Hell the exhaust on my 1IS is about $550 new. But hey its goes back to a supply and demand issue in part. Meaning that the companies want to make all their R&D money back and then some in the shortest amount of time possible. If they know that there is little market, the price goes up, not to mention they figure Lexus owners especially new Lexus owners have the money.

 

combfilter, sorry if made it seem like i was pointing out your post, didnt mean you. Just that if you look in our forum alot of ppl always want FI just that you were the first to bring it up in this thread and i happend to start getting worked up cuz yea, there is no support for us and i had to vent, so thx for letting me vent but my bad if it seemed like i singled you out.

 

I figured someone would bring up the S2000, but I expected it would be used as a reason why we DON'T have many aftermarket parts available. Like the S2000, our motors will be VERY expensive to increase power without FI or NO2. Many S2000 owners spent over $4K on intake, header, exhaust, and ECU to get 15 HP. Of course, it took more than 20 months for those options to be available. Once turbos started hitting the market, it quickly became obvious that the kits were very lacking in tuneability, and the compression REALLY needed to be dropped to about 9:1 to be reliable. It took another couple years for those necessary parts to come available (low compression pistons and standalone ECU), and doubled the cost of the kits.

We don't have 50 HP / liter engines like the big American V8s that are easily and cheaply modded to 70+ HP / liter with just a few hundred bucks.

Honestly, I'm really impressed with how quickly and cheaply the aftermarket has been bringing products to the market for the 2IS. The only thing that I'm disappointed about is how many of those "performance" mods are worthless in regards to performance (shock tower bars, chassis braces, BBKs, etc.), and are basically marketted toward the ignorant.

 

I guess the thing that gets me is this, 1IS has a loyal tuner following, the aftermarket knows this, so when the 2IS was gonna come out, why wasnt nething in the works or there rdy for it, it is a logical next step in my eyes... My example is the 05 SEMA show and the SN-197, Ford delivered a hand full of cars to a few shops 3wks (?) before the show, those guys were bustin **** yet they got stuff out like that full clear roof, wow, not to mention all the other goodies.

Maybe Lexus hasn't done their homework into what type of ppl would buy the 2IS and havent shared info with the aftermarket suppliers, this is a huge oversight but hey, wachu gonna do...

Apex84, LOL yea, i HAD money BEFORE i bought the Lexus, not AFTER

 

I have to agree with you here. Though its great that these parts are now available, they are useless when your car doesn't produce enough power to make it all effective.

 

More specifically the majority of the heads up at Lexus view the 1IS as a strictly tuner based community, which is not the look they want for a luxury brand. This is why all focus is on the new "F" line. Lexus' primary focus in terms of performance is on the BMW M.


Wasn't saying Lexus owners were broke

 

I kinda wouldnt mind pulling the injection set up and going with 3 Webber 46 IDA or 48 DCOE sidedrafts Sure it wont be as good as injection but that lovely sound it would make... I miss the old t-2/t-3 w/mikuni days...

 

A local mechanic installed Megan headers on the IS350 and said it was a big improvement over stock...