George350Zss

Well I have a short list of bolt-ons that I was hoping would free up some horsepower on my 06 350Z. But everytime I open a car enthusiast magazine with a g35 or a 350Z as a project car there numbers are much higher than mine with less mods. Should I get a retune when my Z is only pushing 223.5 whp and 203.3 wtq ?

soleil

iTrader: (43)

wow, ur numbers r so low...my baseline was at 236hp not sure on the torque...with test pipes only, i was at 255hp...i need to get dyno'd again because i have more mods now

soleil

iTrader: (43)

i dyno'd on a DD

1BAD03Z

test pipes gave you 19hp? Dang maybe I should look into those...

Sco2355

iTrader: (10)

When I drive correctly I can almost hang with Soleil in my 03 touring with only exhaust, intake, and a 1/2'' plenum spacer. I haven't dynoed my car but I know my numbers aren't as low as yours. Something isn't right about that.

mrg1981

iTrader: (2)

My Auto roadster dyno'ed at 259WHP with:
Nismo cams
AEM CAI
Nismo exhaust
Kinetix HFC
Motordyne 5/16" spacer
no tune or reflash
91 pump

VisionaryRacing

iTrader: (45)

When my car was NA back in 06, I dyno'd at around 265whp. I had at the time, Nismo headers, Test pipes, Nismo exhaust, 5/16 isothermal spacer, Nismo intake, and Utec.

I would never go by a magazines rating anyways but your numbers seem on the low side.

Nitrouz

iTrader: (27)

did you get a baseline dyno?

it doesn't matter who has higher. For all you know, people with 260rwhp may dyno lower than you on your dyno. The main thing is to compare what YOU got before and what YOU got now.

mrg1981

iTrader: (2)

This is very true. Nitrouz only dyno's like 300WHP on my dyno!

JFWY

SniperHunter

iTrader: (9)

Please take no offense to this, but looking at your sig, most of your mods are ineffective, or are, indeed robbers. On this forum, I've heard and read nothing but bad things about Megan Racing and their products. The Kinetix V+ is also not very liked here. The Injen MR is known to be a torque killer. Your pulleys don't contribute to much.

And you have a standard single exhaust, that probably didn't amount to much more power. You also don't seem to have HFCs or test pipes. Why? You've created such an enormous bottle neck that probably negates any bit of power you gained from your headers.

Imo, restart it all from scratch, man. Go back to stock, sell off your entire setup, except the TS ECU, clearly. For an exhaust, a proper true dual is where you want to look (Borla TD, Stillen, and Fast Intentions are the three best, imo). I've researched exhausts for months before I bought the Borla, and those three seem to be the best.

Then, get a proper plenum component - Motordyne 5/16" ISO Spacer or 1/2" Spacer. Then get some resonated test pipes (Fast Intentions) or HFCs (Berk). Decent headers seem to be Nismo, DC Sports (I think), Stillen, and Fujitsubo - don't quote me on the headers, since I haven't researched those enough.

As far as the intake, get an 06 intake. They're different than 03-05 and are much better. Just my 2-cents, friend.

George350Zss

Much appreciate your honest response and I didnt research well before my purchases. Will definitely take your advise.

SiNzz

iTrader: (4)

Good advice. It takes a lot of research to properly plan out mods. I've been driving stock for almost a year, and I still am torn on what exhaust to buy, what plenums/spacers etc...feel as though my brains is going to explode one of these days.

SniperHunter

iTrader: (9)

You're welcome. Always willing to help. Feel free to PM me with any questions.

I know the feeling. Looking for exhausts, I felt the same way. Just be patient - it'll ultimately save you from making any mistakes.

George350Zss

Say if I did get HFC or test pipes how much more hp am I looking at gaining? Also can my low numbers be based on poor tuning?

VisionaryRacing

iTrader: (45)

You do not need a true dual exhaust by any means. When you start talking about NA mods, the gains are so minuscule that I doubt any one part will be much different that the other. I mean you might gain a bit of hp from one but lose some tq, or vice versa. I think ultimately it comes down to sound, looks, weight, and just preferences.

I would recommend getting test pipes/hfc for what most claim to be at least a 5-10hp gain.

Also your intake is fine. There is no difference between any one or other intakes as far as gains. It is all preferences based on looks, where the intake is located (Nismo vs JWT vs Gruppe).

The plenum spacer you have might give less gains than the motordyne one, but it is still better than stock.

The only mod that I would be worried about is the Megan Racing Headers. I have not heard anything good or horrible about those, but the best are probably Crawford headers.

Again as Nitrouz stated, all dyno's are different so don't take it the wrong way if your dyno read a bit low.

As far as where your car is now, I would recommend a utec, test pipes and getting a tune. I gained 15whp from a tune when my car was NA, but honestly when its all said and done, do not expect the gains that manufactures claim.

I think if you are trying to build an NA car, I would look at Adam@Z1's car or possible tuner cars such as Amuse's Z. I mean those two would be shining examples of how to do NA cars right.

iStan

iTrader: (29)

TP/ HFC and another reflash should put you in a better position.
Also, I assume it's a 6MT, but just want to make sure.

And although in reality this shows very little: A buddy dynoed his 06 6MT, Rev Up, with MD 5/8" Spacer, Mrev 2, Nismo Intake, Crawford HFC, HKS Dual Exhaust and came to 234WHP 227WTQ on a dynojet.

Dyno can be seen this link

In comparison to the above: a buddy with a nonrevup with :JWT Pop Charger, V+, TP, Tanabe Hyper Medalian Exhaust dynoed at 239WHP 225WTQ the same day.

Dyno can be seen this link

George350Zss

mine is a 5AT

iStan

iTrader: (29)

That explains some of it. First, you're not a revup, so don't compare to the '06' Zs.
Second, the 5AT eats some power.

BTW 06 5AT here, so I feel your pain.

Oh btw since I see you're new. The nonrevup is an older version of of VQ35 which is crank rated at 287. The '05 35th Editions and 06 6MTs came with a revup, a vq35 rated at 300 at the crank. The High Revs are the new versions in the 07+ Zs.

George350Zss

I truly appreciate ur feedback. I actually am looking at some HFCs as we speak. Do you know of any other mods I can purchase that would greatly benefit my Z?

George350Zss

I was just thinking of tearing out all the mods I purchased before ur message. Its just hard to believe all my money and these mods only gave me such "embrassing" hp for the z. Thanks for ur input.