uplz4588

anyone see the magazine article in turbo magazine which has 465whp @ 16psi greddy kit. how is it only making 460 w/ that much boost?? even on a built block w/ lower compression!?!? typo or what

uplz4588

does the car even have a built motor is is it still internally stock? article said all work was done at SP engineering. its a red veilside 3 widebody

Rapheal

maybe its a mistype

AmyCroft

iTrader: (3)

I think, Hummm, at 16psi the Blow off valve is working often.

8.0 Compression Ratio, <--- What does the article say?
a few waste gate gasket leaks, <--- Not really - That 16psi would not happen if Exhaust manifold and waste gate were leaking.
stock waste gate springs, <-- These must have been changed.
and a rich AF ratio <---- This is most possible
could read 465rwhp on a Dyno Jet. <--- Maybe not a dyno Jet.

Refresh my memory 16psi is how much in BAR? This should be up to the highest limit a Greedy TT kit can go.

I haven't seen the article. Please more info...

Inquiring minds want to know.

Cheers Amy -

350zDCalb

iTrader: (21)

16psi= 1.08 bar...the highest limit??? i don't understand, please clarify

Brandon@Forged

The lbs/minute air flow the turbos can flow at maximum lbs/minute (or PSI).

Though, the highest it will flow is not the highest PSI. (I don't believe) It's more efficient at a slightly lower PSI than max.

16psi is about 4-8psi off of the maximum efficiency range though.

Brandon@Forged

See if they list any internals...if not, it isn't built-up.

465rwhp seems slightly low for a car that is completely stock as far as airflow mods. (no upgraded plenum, test pipes, exhaust, cams, etc.)

I'm going to pick up the magazine, seems like this would pertain to what I am going to try to do. If 465rwhp is indeed being done on 16psi with no airflow upgrades...cams would net around 20-40rwhp, test pipes would net around 20-30rwhp, exhaust would net around 10-15rwhp, and upgraded plenum would net around 15-20rwhp...you'd easily be over 500rwhp and probably close to 530rwhp.

I'm telling you, I believe with great tuning and plenty of airflow mods...ran on relatively low PSI....it is possible to make 550rwhp on this motor before reaching an upgrade limit where you would need to go to upgraded internals to allow for more PSI to be ran safely. And I bet it would be even more easily achievable with a more advance EMS such as a standalone or EU.

uplz4588

nope doesnt say anything about anybuildup mods. no cams. has an exhaust/tp's i think.

but shouldnt the car be running alot more rwhp on 16psi!!

zachcrosen

iTrader: (23)

You are talking about the red Z with the Veilside V3 widebody kit right? I have the mag sitting in front of me and I believe they are stock internals. The numbers are 425 WHP and 384 WTQ. It says that this is a healthy amount of power for stock internals so I assume they are stock!

fito

and you guys still believe in everything you read on these mags??

zachcrosen

iTrader: (23)

425WHP on stock internals is very possible. Mcduck is running close to 425WHP on stock internals with his Vortech SC. I dont think he is running but 8-9 psi. I am not sure about the 16 psi though.

INTENSEPOWER

iTrader: (208)

SP Engineering does not have to back up this number. They have a huge amount of credibility as tuners. GReddy does all of their U.S. tuning under the direction of SP at SP in City of Industry, CA. They are also an HKS Pro Dealer, having tuned many very very high horsepower cars w/ the V-Pro. HKS doesn't just hand out "Pro Dealer" titles everyday (we're one, afterall )When you enter SP's showroom, the walls are filled with magazine cover plaques of cars that they've built over the years. Here's a few to remind everyone:

http://www.sp-power.com/projectcar_SKYLINE%20GTR.htm
http://www.sp-power.com/projectcar_supra7.htm
http://www.sp-power.com/projectcar_kh1073.htm
http://www.sp-power.com/media_PAS_0604.htm

If any one tuner doesn't need validation it's SP (and us.. of course )

Brandon@Forged

Just becoming an HKS dealer is tough enough...i've looked into it before. Becoming a pro dealer is even tougher.

fito

16Psi 465whp? there is something wrong there! Don't you think? @8psi we do 411whp on a dynojet, that's a 8psi difference! and only 54whp?? I know mag people and ALOT of times they MAKE numbers up!. Iam not saying they didn't do that kind of whp, is just that not at 16psi.

Brandon@Forged

Someone posted the real numbers further down. They still state 16psi which is extremely high for such low numbers. Most magazines won't make numbers up if it doesn't benefit them (paid off).

SP Engineering made their record with hondas and EVOs...they have done a pretty poor job on 350Zs so far. ZRAYGO's 350Z was making around 400rwhp. He had everything needed, they told him he needed better downpipes and exhaust before they could get it any higher (other people have tuned up to 500+rwhp with that setup).

He has GReddy TT w/FMIC, HKS FCON V Pro standalone, Arias pistons, Pauter rods, AEBS sleeves, etc.

Definitely has the potential. Personally, I don't think SP Engineering can tune very well. 16psi and only 430rwhp?

SSR Engineering

How can you say they can't tune well without seeing any air/fuel charts? Granted the #s do suck we made 510WHP @ 13 PSI on a low comp motor. But they are nostalgic for tuning, they've tuned cars up to 1200-1400hp

Brandon@Forged

430rwhp and 16psi....telling zraygo they can't tune his setup (which is good for over 500rwhp) past 400rwhp with a standalone? Seems to me like they suck at tuning, maybe it's just the 350Z?

Like I said, they made their record upgrading hondas and evos, doesn't seem like they are doing too well with the 350Z/G35.

phunk

iTrader: (21)

its probably just a typo or someone speculations. just cause its printed doesnt mean its fact. There have been magazine articles bragging about power output in cars that dont even run yet... you cant believe what you read in those things. There is no way its only making 465 at 16 psi, regardless of how bad a tuner could be, it couldnt run right and only make that kind of power.

mcduck

Correct on all counts, Zach. Though remember the torque curve a twin turbo is both more aggressive (hits peak numbers at lower rpm) and more powerful (higher absolute peak number). Overall area under the power curves are lower with the Vortech vs TT. So, 425rwhp on a Vortech car w/stock bottom end is less risky than 425rwhp on a TT car w/stock bottom end.

mcduck

On the otherhand, I'd be inclined to say they tune extremely well. Great, the turbos make 16psi, but they obviously know the car has a stock bottom end. They probably deliberately tuned the car to limit the horsepower and thus not risk blowing the motor's weak bottom end. This makes sense to me, but if its true makes me wonder why they bother pushing 16psi when 8psi and a normal tune would achieve the same thing.