In this month's road and track mag they tested 4 souped up 350z's. Stillen, Brembo, Greddy and MotoRex. Here are the numbers with mods. I wish they had tested the ProCharger Z
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Stillen 350z:
Supercharger
Alum flywheel (1/2 the weight of stock flywheel)
Stillen Exhaust

Yielded a 13.8@104.8mph from a claimed 354HP
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MotoRex 350z:
New Cams
Alum Flywheel (1/2 weight of stock)
Pop charger

They claim 350HP and got 13.7@104.6mph from an N/A with if true is a break thru
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GReddy 350z:

Twin-turbo system
Intecooler
GReddy Exhaust

Claim over 370HP and get 13.4@108.1
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Brembo 350z:
HKS Exhaust
lots of brake, tire and suspension mods

Ran 14.2@100.8mph
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I'd like to look into the MotoRex cams for $1100 with the flywheel and exhaust since they are claiming a 60HP+ increase with it and seems to be making the same power as the Stillen SC'd Z which I just don't get. Heck the stillen did a .1 better 1/4 then me with an SC and about the same as the Z with the cams!

 

I truly hope you don't believe them. Dont put much stock in those tests. They must of had someone with a learners permit driving those cars down the strip. I personally know someone who ran 13.89@103mph bone stock with an '03 track. This test is similar to the road test for the supercharged s2000 that only reduced it's 1/4mile time by one tenth of a second . I don't know what kind of monkeys they have testing these cars, because blown s2000s are easy 12s. The greddy tt kit has been tested prior to this half a$$ magazine review. One test produced a 12.4 and the other a 12.7 if I remember correctly.

 

R&T also tested the Track Z in 5.8 seconds to 60.I sincerely doubt that time.

 

Well either way I'd like to get ahold of those cams. And I don't know how it would be possible to only get a 13.8 from a supercharged 350z. I would think they would have to be launching at 600 RPMs to get a time like that.

 

I bet the answere is simple. The compression is too high on these cars to be running extra boost without race fuel.
I have seen it with many cars. S2000's, E46 M3's and now the 350Z.

I bet if they put part race fuel in, the timing would go back to normal and they would see much better gains.

 

So you're implying these cars are getting detonation and the ECU is retarding timing? Possible. But not likely in this situation since Stillen wouldnt hand over an un-tuned car. Also, the greddy tt car already went 12.4 So this test looks like all driver

Btw, nice time with the LT1. Thats pretty fast for stock. Know what a 1LE is?

 

Yeah...I just ordered a 1LE AC Delete pulley for my Z(28).

I wasn't really implying it wasn't tuned, but the timing may still be retuarded.
Like in my car the timing tables have been advanced a good bit, but if the knock sensor senses any detonation it will still retard the timing.

A friend of mine has an MCoupe pushing around 8psi on a stock bottom end. The best he has managed is mid 13's, and I think he is only getting about 4-5mph better than he did without the charger. He refuses to try race fuel, so I am fairly shure he is suffering from the same problem.

 

Well, if the car was indeed tuned (which I'm sure it was) the timing wouldnt be retarding (noticeably anyway). That was my point. I agree with you on the race fuel. Previous to my 350z, I had a '91 1LE t/a with a paxton supercharger. I tuned that thing myself. I remember how much knock retard I would get if the fuel pressure wasn't correct. 1les are cool cars http://www.1le.net [/end hijack]

 

to me it seems as tho when these mags test these cars with aftermarket parts they post the times they get, the un-corrected times and when they test the stock stock cars the times are corrected for temp and altitude.

 

hmm maybe they shifted at 3000 rmps when they were testing those Z's , not trying to brag but i personally did 13.7 at 103mph in my 03 touring bone stock , so go figure...

 

huh? WTF, did 13.9 bone stock, best MPH 103.7..

Going to write to those losers and send them my timeslip...

Bunch of ***s

 

Yeah... there are a lot of questions about that story. It leaves quite a few holes in the picture.

 

Apparently, R&T has doofus drivers doing their testing. It's apparent that they're doing a 3500-4000rpm clutch drop and hopping/spinning out of first gear. Look at the trap speeds, those should give you a better indication of power.

I've been keeping track of the results i've seen personally or have seen posted up on here and other forums of time slips vs. mods.

In good conditions, a stock Z on stock rubber is capable of 13.7-13.9 @102-104mph

$2.5k in bolt-on's and drag radials will potentially net you very low 13's @ ~106

FI (TT or SC) will shave a little more than a full second off stock ET.

 

R & T doesn't "stress" the engine of the car.....meaning they don't put the pedal to the metal when doing these tests!!!!!

 

Those times are with a great driver and perfect conditions most want trap that high on average stock more like 99-101 and 101 pushing it for many. I'm still waiting to see a stock z trap at 104.

 

dont know if you guys consider injen cai a modification , but i after i installed injen and did some weight reduction on my Z , i was able to get to 104.75 mph on one of my runs..

 

If it aint stock its a mod no matter how little or big the project is.

 

My personal experience after reading the article was that somewhere they are getting their Crank hp and Wheel hp mixed up.

Think about it.


The Procharged Z is netting 360 hp to the wheels. That is roughly 420 hp at the crank

They said the Stillen 350z had 354 hp, but we all know that they are pushing low boost and making only 50 hp to the wheels. So that 354 hp has to be at the crank which equals 290 at the wheels.

Now the MotoRex 350z I am uncertain about, but those numbers have to be at the crank also since those same mods do about equal that of the Stillen Z

The GReddy 350z is obviously pushing 360 to the wheels i.e. same as the Procharged Z. I dont know where they puleed those 1/4 mile times from but it is obvious they left TCS on or the track had oil slicks at the take off cause it should have easily pulled mid 12's.