WMichaels, how did the chip & k&n do for your Hp? and is worth the 500 or more $

 

To me it's worth ever cent. To someone else it may not be.

The performance difference is very noticeable with the automatic trans. (Someone with a 6 speed would have to answer for how that car reacts). I've posted several times before but I'll do it again.... My mileage was 23 mpg with 60% HWY and 40% city driving and my HWY was 25 mpg Now I get 25 mpg with the mix and 27 mpg hwy. I got a G-Tech Pro and my 0 - 60 times are consistantly 5.62 sec. and my HP is 244. I am autocrossing the car and my times are right with the times the 350 Zs are turning. The SCCA has the 350Z in BS (B stock) and has the Crossfire in DS (D stock).

So as I said at the top for me and the way I use my car it was well worth the money. It's all in what you're after.

 

Isn't a stock auto crossfire supposed to be something like 7 seconds? A 1.4 second decrease in 0 to 60 time is pretty significant for just adding a chip and filter. If you're putting down 244hp at the rear wheels you must be at like 260+ at the engine? Something doesn't sound right.

 

The 244 is not on a dyno.... It's with the G-tech. I'm still planning on getting the car dynoed to get real/hard numbers. As for the 0-60 times. In the testing I've done I've never checked it with the traction control on because that's just a waiste of time IMO. I think that may be where the 7 second times come from. And I power brake in first gear to 2,200 - 2,400 rpm then launch the car... Just like you would if drag racing.

 

The G-tech is supposed to display wheel HP, which is exactly what a dyno does. Of course the G-tech is influenced by wind restriction since the car is moving, but in either case, whether Dyno'd or G-tech'd it is rear wheel HP. The 244 sounds awful high considering wheel HP is typical 10 to 15% less than crank. If that were the case, you'd have about 270 at the crank. :?: Are you sure you didn't input the weight of the car incorrectly?

 

That's precisely why I'm very sceptical of the G-tech numbers. I too think it's a bit high. But that's the number it comes up with when averaging 6 runs, 3 each direction on the same piece of "close to" level road and calm winds. I want to get it on a dyno to get more reliable data.

 

The one thing that is reliable is that whenever a climb in, and crank the engine, my fun meter pegs and stays there until I shut it off and climb out.

 

Wow - times under 5.8 are VERY good. That's exactly the kind of speed I'm looking for - just enough to be able to take on a Z and its smug driver I'm going to go ahead and get the chip and filters - supercharging may come later, depending if they come out with a supercharger for our engine. But I'm not gonna get the SRT6 - there's no way I can justify spending 10k additional $$$ for a stage 1 factory supercharger when the aftermarket chargers are usually much better in perofmance and lower in price (at least that was my experience with my VW Jetta 1.8T).

 

What kind of compression did the Jetta 1.8T have? 9.8:1? Was it higher than 10:1?

 

It had a compression-reducer plate on the heads, so it only had 8.5:1 compression. Here's the link where I bought the package - installed it myself, the Stage 1. (Note: The package shown now is seperate from the one I bought - the one I bought wasn't as powerful, only bumped me up to 275HP). The picture shown is a turbo beetle, but it's the same setup as you would use on a Jetta.

http://www.hpamotorsports.com/golfjetta.htm

 

Your profile says you are a student. From what you've demonstrated here, my guess is that you're not a very good one.:? I'm going to try one last time to teach you something about Superchargers and how to use them correctly and efficiently!

Start by reading this entire article (most of the references in it are from BDS "Blower Drive Systems" if you know what a blower is you should know this is one of the top blower manufaturers in the world) http://www.digitalnoesis.com/trucktech/boost.shtml

You wil notice that the optimum FINAL compression ratio for blower efficientcy is around 12.4:1 for 91 Octane fuel..... That's the FINAL compression AFTER boost!!! That means that if you start with an engine that is already close to that compression ratio, your blower is not going to provide the optimal compession ratio and you're defeating the purpose of the blower and you will not get the performance you're looking for unless you run a fuel like AVGAS (115/145 octane) or maybe 106 octane racing fuel... In any case not very practicle for a street application!!!

With that said and trusting that you have read the article..... If you still want to make the uninformed statements regarding blowers and compression that you've been making, then you truly are not the sharpest knife in the drawer.

END of lesson......

 

Isn't that a VR6 in the beetle? Are we talking 1.8T or VR6?

 

Michaels, quit being a *****. Just because it isn't at the optimum compression doesn't mean it "defeats the purpose." Just like the Crossfire running at an 11:1 air to fuel ratio above 3,000 RPMs. That's not optimum. Optimum would be 13.2:1. Get over it. Blowers and turboes still work and still produce more horsepower. If not, how does an 11:1 compression K20A engine make 550whp with a 25psi turbo?

From your own article:
The article begins by stating there are tons of things that affect the efficiency of chargers, including cam profiles, lift duration, engine cylinder size, the adiabatic effect that each charger has which is different from design to design, the shape of the cylinder head ... you cannot just blanketly say what you're saying. And besides, the final compression ratio is still lower than 12.4:1 in every instance I've mentioned, especially after adjusting for temperature, altitude, and the fact that MOST gas stations have 93 octane gas, not 91. And even forget that, who said I was talking about daily drivers?

 

Now I will say it.... You are a MORON!!! You just don't get it!!! I'll bet you would try to put an 871 blower on a lawnmower!!!

Now go find yourself an Acura forum and quit trying to talk about things you know nothing about!!! Or keep spilling your BS here, if you must, but I'm quite sure that 99.9% of the folks here will ignore your moronic statements.... Crossfire owners are a lot more intelligent and educated than you seem to think.

25psi turbo with the waistegate hung wide *** open most of the time getting rid of the excess (unusable boost) Or it's pinging it's *** off and will burn valves and pistons unless it's running a very high (well above 102 Octane fuel) octane fuel...You really don't know your *** do you???

 

Did I ever say what octane it was running? Did I ever say what kind of engine work had been done to reinforce it?

What I seem to think is that you're a radical simply out to bicker with me in a field where you ignore every variable I decline to mention explicitly.

But hey, if a 50+ year old gets his S&M pedophilic kicks by haranguing a younger car enthusiast on an online forum then have at it. I'm glad I can provide you with some pleasure in life. It's nothing off my back. I've seen these cars running on the track.

I hope you eat Cheerios in the morning. I wouldn't want your blood pressure to break 280.

 

That's all I've got to say to you.. I haven't tried to shoot you down. I've tried to point you in the right direction so that you could learn something.:?... You just proved my point !!!

 

:lol: You guys crack me up.

 

Thanks, Heb80... :lol:

 

Oh yeah, blow up and act like it's all cool afterwards. Real smooth, Mr. Borderline Personality Disorder.

 

Give it a rest.... It's over.