Did many runs with a friend's auto '00 Prelude to determine what kind of gains my PRCAI/Ypipe made to my car. Let me say this before I write my detailed analysis. CAI/Ypipe = GOOD STUFF. My car's automagic btw. The Prelude has AEM cold air, Greddy catback and some stickers as power mods.

1. Without CAI/Ypipe

0-100mph. Max's awesome torque gives me an advantage, and I have a slight lead by end of 1st. Beginning of 2nd, Prelude starts catching up, but we're still about even. Beginning of 3rd, Prelude starts to get away from me. End of 3rd and beginning of 4th, prelude keeps putting distance and it is apparent I won't catch him. By 100, he has like 3 car lengths on me.

30 mph rolls. About even to 60mph, but after like 70mph or so, Prelude again starts putting distance. He is in VTEC range now and my RPM is past the 5500 peak HP point. I have no power left. I can't catch him.

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2. With PRCAI/ypipe

0-100mph. I sling out (of course ) , and I have a car length by end of 1st. Beginning of 2nd, I'm still ahead. Beginning of 3d, I have like a car on him. At this point, the prelude's VTEC is in full swing. End of 3rd and beginning of 4th and on, I keep going and going. By end of the race, I think I had about 2 cars on him. Thing to note about this run is that I had the lead in 1st as always, and I was also able to keep the lead. Being able to sling out, with our tremendous torque, is a huge advantage. Thus I was able to put some cars on him by end of the race.

30mph roll. Before we know it, we're doing 60mph and up. I have almost a car on him at 60mph. Around 80mph, he is around my rear fender. Now, if a max was stock, the prelude would start catching up at this point and eventually he will be walkikng, because his VTEC just overwhelms the max. I had this happen many many times with this same Prelude. BUT, this time, I was able to keep my lead up to like 110mph. It was unbelievable. I didnt know the CAI/Y combo would be this awesome. He couldnt believe how the CAI/Y combo turns my car into a completely different animal. He wants a max now.

P.S.

After 80mph, I was like just about ready to turn on the juice, because I really thought the prelude would catch up to me and walk away. Thats how bad he used to beat me without my CAI/Ypipe. I was underestimating the power of my CAI/Y combo. Needless to say, I didnt have to use NOS.

 

good job!

i need CAI & ypipe

 

Damn hokiemax, not I want a y-pipe bad! That and for my FLP midpipe to come in.
-Cyrus

 

nice. And you are running 16s in the 1/4? Or was that before the y and CAI

 

I love to hear stories like this. What type of Y pipe do you have? I have a hybrid intake, so i might not be as fast off the line but it shouldn't be that much of a difference since my intake is as long as a CAI, with the filter having less than a half an inch beofre it wouches the body. I have a WSP y-pipe i'm going to put in tommorrow with nightrider and papasmurf since all the shops were closed today.

 

I have a budget ypipe and the stock 16" SE wheels. One thing to note is that it was a very cool day on the race. I DEFINITELY felt the cooler air giving me lots more power than on the track day. With a ypipe, when the air is cool, there is a "mini VTEC" surge starting at 3000 RPM. I only feel that extra oomph on cool days. On hot days, I dont get that awesome 3000 sweet spot surge. This isn't in my head. I know it. I drove 120k miles in 4 years, so I know car very well.

 

Seems like Nice gains. I wish I had my intake from FLP,but I'm still waiting for the long awaited day to come

 

nice nice. Was the lude stick or auto?

 

Good writeup and very interesting test. Good job.

808: The prelude was auto.

What kind of Y and CAI do you have?

 

If I'm not mistaken, the "surge" at 3000rpm are the tumbler valves closing in the intake manifold (clearing the path) for higher RPM's. I thought I read somewhere that these are in place for emissions. I feel this in my 99 5spd as well, and it shows up on the dyno too.

Somebody correct me if I'm wrong, though...

BTW, nice runs on the Prelude!

I gotta get me a y-pipe

 

I want cai/y pipe too but too loud!

 

bout time you beat up on your friend with the lude..

 

Not with the STOCK muffler
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98 SE/ 5 speed/ CAI/ UDP/ Stillen Y pipe/ RT cat/ Courtesy B pipe/ Stock muffler
FSTB/RSB/ Clear front bumper lenses/ Clear tails

178 fwhp/191 fwtq
14.73 @94.1

 

yup feels good to have CAI and y-pipe...now all i gotta do is get a tune up and i'm set

 

All 4th gens have that torque spike there, but not all Max's have the swirl valves. I believe it is only 99 Max's or Cali spec Max's, or maybe they have to be both 99 AND Cali spec, but either way, they are only on selected Maximas, not all. So that's not where that torque jump comes from.

 

Very nice writeup. You can finsih off the exhaust stuff by adding a B pipe and putting on a 5th gen muffler. You will still get power increases, not like the Y though, and the car will still be relatively quiet.

DW

 

After 80mph, I was like just about ready to turn on the juice, because I really thought the prelude would catch up to me and walk away. Thats how bad he used to beat me without my CAI/Ypipe. I was underestimating the power of my CAI/Y combo. Needless to say, I didnt have to use NOS. [/B][/QUOTE] damn thats unbelievable with just those two mods. But do u pass emissions with the y-pipe. I heard theres a chance you might not pass emissions. And is the prcai with y-pipe too loud?

 

damn thats unbelievable with just those two mods. But do u pass emissions with the y-pipe. I heard theres a chance you might not pass emissions. And is the prcai with y-pipe too loud? [/B][/QUOTE]
i have stillen y and pr cai, it sounds great when you punch it. not loud at all in my opinion. don't preludes run low 15's??