synth19

Just got my injen exhaust, and I've very satisfied with the looks and sound. I think the sound is NICE... it's definitely louder then stock! I couldnt go any louder, and I cant believe people dont think this is loud enough! Maybe I'm getting old.. lol Anyways, this was done at Genesis Racing and Development ( www.grdperformance.com ). I bought their slightly used injen exhaust since they just got the APS exhaust in.

We did about 4 dyno runs each with the stock exhaust (no engine performance mods at all), and then an additional 4 more runs with the injen. I was happy with the gains (although minimal). We did quite a few runs because of various variables. The engine just needed time to warm up. Each run got progressively better. We talked about it and it's possible the numbers were affected by 1. not driving the car for about 2 months, and 2. winter gas. But like I said, I'm just happy I did NOT lose hp or torque as reported in some other thread. I'm sure I would have better numbers without the variables mentioned. Attached is the baseline and injen exhuast dyno's comparrisons.

I'll have better pics of the car soon....


Dyno charts:









In case you guys are wondering about the dyno we used:

http://www.grdperformance.com/dyno.aspx

r10apple

Wow...that is the Injen SAS exhaust? I wouldn't have thought the gains were even that much, but I was wrong.

Certainly cheaper than Stillen.
Got any other mods planned? Is that your only mod (engine/intake/exhaust wise)?

Those are very respectable numbers...

synth19

Yes, it's the injen SES exhaust. Mods include: Mods include: 35% tints/Racing Hart J8's in gunmetal (5" rear lip/The offset in the front are 26 on (19x9) & on the rear 19 (19x10) ), Blue Batmobile overlay on front reflectors, Veilside V1 Lip in Carbon Fiber/TEIN S-Tech springs/Hotchkis Sways/Katzkin Orange Seats. Toyo T1S (245-35-19 & 275-35-19), Injen SES Cat-Back Exhaust System (Straight Tips)

Future mods: Maybe the APS single turbo out this summer.... really thinking about it!

r10apple

I've got an '05 G35c on order and have been looking at mods.

I really here good stuff about the JW Popcharger thing, but I love the sound of the CAI and may just stick with an Injen or Nismo intake. My woman is asking me to wait before spending too much money (meaning, s/c, turbo, etc), but I am thinking intake/headers/exhaust right off. I really like the way the Injen system looks...

synth19

my advice is to realy think about your long term plans. If you do go FI in the future, you'll have to get rid of the intake and headers....just something to consider.

Crazy Bimmer

thats sick yo.

dragon084

are those teinS?

synth19

^ yes, tein's... did the green give it away? lol

Crazy Bimmer

hows it feel to drive the car again? Couldnt wait till spring eh?

synth19

felt great! Cant wait until the weather gets better!

darrinb

sweet, i got my car dyno'ed on one of those dynos too

ClnOB

With the dynomometer your actual HP will be around 242ish...

r10apple

The intake I knew, but the headers? No headers on the G35c with the s/c?

phipark

Nice gains, I too am surprised that you gained that much from just an exhaust. My friend was considering the borla exhaust on his Z.

synth19

I can't be 100% sure since I dont own a G35...but I'm almost positive. Maybe check some g35c forums and see what they say, I'm curious to know too. thanx

synth19

I like the borla, it's nice and sounds good. It just has way too many parts!

phipark

He won't be installing it anyway. He's not exactly mechanically inclined.

srika

what the heck kinda dyno is that..... are you sure it works...

heheeh.. j/k. I need to hear that bad boy sometime. maybe I'll meet you at one of the Thursday meets sometime.

srika

phipark

Found a webpage for this exhaust.
http://www.300zxstore.com/in35exsseni3.html

I'm not sure if I like how the exhaust seems to be "too" short.

synth19

^ not exactly the same. my exhaust has the straight tips. the link above has the angled tips (that system has been discontinued since).