Gstt

I was wondering if anyone can help me out here. I'm planning on getting an exhaust system for my 2000 Gs400.

Its between JIC bullet @ $$879 116mm tips 65mm Y pipes
or Greddy PE @ $620 donno if 136mm available for gs or its 115mm tips. (need 2 know)

I also have the SRT Intake + ECU.

how loud are we talking here? which is better.
which gives more power??


The JIC looks good but i can't make up my mind,

PLease HELP!!!!!!!!!!

fireballs gs400

considering i have never heard the jic exhaust and have a greddy on my vehicle, i would recommend the greddy. i was pleased with the sound and looks. i would think a larger tip would not look so appealing. the greddy was a good choice for me imo

Gstt

Jic is the exhaust from the v300 TT. It just so happens that it fits the Gs400 perfectly. Its a full cat-back system and looks pretty crazy.
I don't know about the HP gain or sound, but from what i hear its quiet. ((2.3 inch pipes))

Tell me what you think guys.

Gstt

jkhghg

zenki300

iTrader: (3)

I'm curious... is this JIC Bullet system you're referring to made of titanium? If it is, you're going to have one of the lightest along with the most "colorful" exhaust systems for the GS.

If you're planning to go forced induction later on, I'd rather go with the Greddy system due to the better piping size- 70mm. In case you stay N/A, that 2.3in. is fine, but don't expect too much gains because that sounds close to stock size piping.

Another thing to keep in mind... contrary to popular belief, backpressure is a myth. Yes, a little bit of it is necessary, but it's a rule mainly for the N/A's, because no matter what, an exhaust system will always cause your car to lose power on the low end, but it usually gets it back on the higher end if it's designed correctly.

As for forced induction (I'm guessing you've got some kind of f/i plans in the future because of your screen name), 3in piping exhaust systems are the "minimum." Keeping these things in mind when choosing will save you lots of money and trouble later on.

400DGRZ

iTrader: (2)

Here's a link to the JIC.

http://www.overboost.com/story.asp?id=440

Guru

Titanium for under $1000? No way. You won't even get full stainless for that price. I'd say go for Greddy. Cheaper and good design. The JIC will be louder judging by the tiny mufflers.

LexusRules

the small piping will make up for hte small bullet style muffler. My guess is JIC will be quieter. Also JIC has resonators which the greddy does not.

I love my greddy but if i could do it again i would go with JIC or another bullet style exhaust. Its up to you in the end. Either JIC which is about same size tip but smaller canister, slight angle, less resonance @ speed, and quieter overall (cannot garentee this), or the greedy which is a little more agressive all around. You'll gain more top end with greddy.

shftup

Are those prices CAD? or ....USDA.
If, Cad, where from?
thxn

JBrady

Actually, backpressure IS a TOTAL myth. People assume that larger pipes have less backpressure. Actually, at lower gas flow, the larger diameter pipe hinders flow due to turbulence, reversion, acoustics and other dynamics. A larger diameter pipe will often hurt low end torque but not due to less backpressure.

JBrady

According to the Overboost article the system uses dual 65mm piping (2.56") that is plenty big for even forced induction up to 500hp (assuming the other components flow well) It also mentions an anti-reversion chamber near the inlet. That may be the 3"+ OD pipe from the center resonator, it may have an AR chamber built into it which should help keep torque up. This is a stainless system with straight through resonators and mufflers. Most systems so designed are on the loud side. If anyone gets this please give us a review. I am also surprised to see this basic system available for the LS400

Gstt

how its sits on a Gs400

Gstt

So my launch will be slower???

Gstt

I luv greddy don't get me wrong but the pipes go down to only half of the car. The Jic is a full cat-back.
Should be quiet, but with the SRT Intake it will be loud no matter what.

i tried to upload the pic but its too large.


any pics of greddy PE on Gs's>>?

LexusRules

greddy is also cat back..

http://members.rogers.com/lexusrules my car is inthere

photos: http://members.rogers.com/lexusrules...lery/index.htm