any suggestions for chip? - Lexus IS Forum
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post #1 of 15 (permalink) Old 09-04-2008, 04:48 PM Thread Starter
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any suggestions for chip?

anyone have any suggestions to chip my car? im all ears
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post #2 of 15 (permalink) Old 09-04-2008, 05:29 PM
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I don't think there are any chip that works for the IS.

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post #3 of 15 (permalink) Old 09-04-2008, 05:31 PM
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Actually there isn't a chip available for our cars. I know is sounds crazy considering there seem to be chips out there for everything else, but its true. You could take a look at the SRT intake+piggyback ecu

Swift Racing Technologies - High Flow Intake System with Race ECU

Thats about as close to a "chip" as you're going to get i think. I don't own it so i can't comment on it though.

02' IS300
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post #4 of 15 (permalink) Old 09-04-2008, 05:34 PM
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I think chips are for domestics.
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post #5 of 15 (permalink) Old 09-04-2008, 06:09 PM
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Well, plenty of chips for German cars as well, and I think there ARE chips on ebay for the IS, but AFAIK those don't work. As for SRT, that is not really a chip as you're adding a new intake as well.

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post #6 of 15 (permalink) Old 09-04-2008, 06:11 PM
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closest youll get to a chip is the SRT intake + Piggyback combo

2001 DWP IS300

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post #7 of 15 (permalink) Old 09-04-2008, 06:16 PM Thread Starter
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whats an SRT intake+piggyback ecu?
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post #8 of 15 (permalink) Old 09-04-2008, 06:55 PM
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pretty much what it sounds like.

You get the SRT intake tube, filter, bracketry, and a small preprogrammed fuel controller that is wired into the factory ECU.

Our factory ECUs are rather wierd, but very nice at the same time. The stock IS300 ECU alters it's fuel perameters depending on driver input. In other words, it matches it's driver's style. If you are hard on the pedal alot, it will tune itself for more power and poor fuel economy. If you drive like a grandma, it will detune itself, and sip fuel miserly.

Here's another way of putting it. Take two IS300s. Both same mods and milage. #1 has a driver that can't keep his foot out of it. #2 has Ol' Miss Meridith behind the wheel. Take both cars, and run them on the dyno. #1 should lay down around 200whp. #2 will smack down around 165-170whp. Now, if you switch drivers, car #2 can eventually change itself to the driver's demands, but it takes time... Time that pisses me off when I've getting ready for a full-blast run on an autocross course or on the drag strip.

The SRT ECU detects when 100% throttle is used, and inputs it's own fuel map into the mix; overidding the factory fuel map, no matter the driver.

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post #9 of 15 (permalink) Old 09-04-2008, 08:10 PM
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Quote:
Originally Posted by john04 View Post
whats an SRT intake+piggyback ecu?

lol, I gave you a link in my original post.

02' IS300
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post #10 of 15 (permalink) Old 09-17-2008, 02:16 PM
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Hmm I have been wondering the same myself, ANYONE out there tried anything besides the SRT???? Id like to get something

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post #11 of 15 (permalink) Old 09-17-2008, 04:17 PM
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Quote:
Originally Posted by Sexy Black Lexi View Post
Hmm I have been wondering the same myself, ANYONE out there tried anything besides the SRT???? Id like to get something
Plenty of people have had other intakes, I would do a search for "intakes."

They essentially all do the same thing.

The only one that stands apart is the SRT, due to its larger pipe diameter and ECU box. K&N, Joe Z, RMM, Mishimoto, AEM, Injen, etc are all pretty much the same as far as performance goes.

The AEM is pretty popular and it is competitively priced. The Joe Z makes your car look stock, which is a plus if you live in Cali or some other Nazi emission state. Good Luck!
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post #12 of 15 (permalink) Old 09-24-2008, 01:27 PM
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Quote:
Originally Posted by Dark2JZ View Post
pretty much what it sounds like.

You get the SRT intake tube, filter, bracketry, and a small preprogrammed fuel controller that is wired into the factory ECU.

Our factory ECUs are rather wierd, but very nice at the same time. The stock IS300 ECU alters it's fuel perameters depending on driver input. In other words, it matches it's driver's style. If you are hard on the pedal alot, it will tune itself for more power and poor fuel economy. If you drive like a grandma, it will detune itself, and sip fuel miserly.

Here's another way of putting it. Take two IS300s. Both same mods and milage. #1 has a driver that can't keep his foot out of it. #2 has Ol' Miss Meridith behind the wheel. Take both cars, and run them on the dyno. #1 should lay down around 200whp. #2 will smack down around 165-170whp. Now, if you switch drivers, car #2 can eventually change itself to the driver's demands, but it takes time... Time that pisses me off when I've getting ready for a full-blast run on an autocross course or on the drag strip.

The SRT ECU detects when 100% throttle is used, and inputs it's own fuel map into the mix; overidding the factory fuel map, no matter the driver.

soooo if i drive my car like a normal DD then decide to drive like crazy it takes time for the car to respond?
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post #13 of 15 (permalink) Old 09-24-2008, 03:45 PM
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Umm idk what you mean, if you're saying will the throttle response be there, yeah it should but will all the power be there, maybe not. If you wanna speed up the process, just reset your ECU. Unplug the negative battery terminal and step on the brake pedal until it gets stiff. Wait another 20 minutes-ish and then reconnect and start it up. Your stereo presets will go away. Then take you car out and drive it like you stole it for a while

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post #14 of 15 (permalink) Old 09-24-2008, 04:05 PM
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Lol read it wrong
My bad haha thanks though.
I failed to read the srt detects when 100% throttle is used
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post #15 of 15 (permalink) Old 09-25-2008, 09:19 PM
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there definitely aren't any chips out there for our cars... however, you can send the one originally in the car back to lexus and have them reprogram it... this however MAY add 5 horsepower... and it kills your gas mileage.. so usually not a good idea.


I just installed a Fujita intake and i like the sound and performance it has. It gives the car a little better pickup and sounds really nice. I would like to have an intake however that is a true cold air.. that reaches all the way to the ground almost.. are there even any for our cars??
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