kevin.tran

iTrader: (4)

Well I just had installed my OBX Headers a few days ago (Thanks David). So far so good. I also left the stock Y on. It pulls a harder throughout the RPM's and gears. It is definitively louder and more aggressive but I also have an intake and aftermarket mufflers so I'm not too worried about it being louder. I've also installed a dual output O2 sim so no CEL. I also left the two post cat O2 sensors in so I don't have to add resistors on top of the O2 sims. I do hear some rattling from the rear right but I will get that checked out next week could just be hitting on something because it's on and off. Car feels like it's awake now esp. when I am going WOT on the freeway. I will dyno next friday and post results for you guys on hp and tq gains. I will also try to post up a sound clip.

Update:
Before a tune with the headers I was at 212 hp and 220 tq after some tuning with the new headers I'm at 219 hp and 233 tq. I will post dyno sheet tomorrow. So stock of 184 hp and 186 TQ after intake, exhaust and headers I'm at 219 hp and 233 tq. I've netted +35 HP and +47 TQ after all the mod's and tunning

Mods: Intake, Headers, 2.25' piping all the way back to MagnaFlow mufflers and Apexi Neo A/F Controller

Videos:
http://www.youtube.com/watch?v=X927ST9qCtY

http://www.youtube.com/watch?v=Kh-cyiU0enc

Dyno:

neojungle1

iTrader: (8)

please do if i like the result from ur video and dyno..ill ask my friend to order me one his a account with obx (discount) or his cost

kevin.tran

iTrader: (4)

Here is a video of my car on the dyno this is taken behind the car
http://www.youtube.com/watch?v=X927ST9qCtY

And a video clip of in front of car
http://www.youtube.com/watch?v=Kh-cyiU0enc

4litre

iTrader: (1)

WHOA!!!! That's explosive!!!

silvciv888

what sort of engine management are u using? aem ems?

kevin.tran

iTrader: (4)

I am just using a Apexi Neo for a/f tunning

kevin.tran

iTrader: (4)

Thanks

7DOOBIE7

is it me or does the first clip have a Mitsubishi logo on it? the vid quality is krap and i can't tell. camera pans straight to the floor. link didnt work so i copied and pasted it. the second one sounds good though

McKrevice

iTrader: (1)

the sound is probably off, but that sounds like a Formula car or a Ferrari, not a Lexus.

Alexus_300

iTrader: (4)

Congrats on the dyno numbers. I'm not calling you out or anything, but I've been around these motors for quite some time now and know what they dyno with certain mods. Unless you have torn into your motor and had it apart and did some porting and upgraded cams, no way will a simple I/E/H will net you 219/233. Post up your dyno sheet and your mods. I'm sure that who ever dyno your car did a little tweaking to give you the false numbers.

neojungle1

iTrader: (8)

yea the first video look like lancer on the dyno but look closer youll see the lexus on the dyno very quick shoot upper left side

kevin.tran

iTrader: (4)

the first clip was crappy. it was pointing towards the evo and my gs was in the back I couldn't get directly behind my gs while it was on the dyno. this was taken from my cellphone so yea the quality wasn't there.

V8RdnLow

iTrader: (14)

Do they make a header for the GS430?

kevin.tran

iTrader: (4)

S&S used to make header for the GS4. If you look in the performance section you will see the long thread on it.

First Post updated. Also Mod's can you please move this thread to Performance post in the wrong place. Thanks

Alexus_300

iTrader: (4)

It's interesting to see this dyno graph. First, it seems that the dyno operator does not know how to dyno a car period as there are two shifts that occurred during these dyno session. Secondly, the upper rpms indicated that you were either spraying a small shot of nitrous or something because you nearly gained 40rwhp in a small range of 400 rpm.