Does the Under Drive Pulley really add any NOTICABLE power? I’m mostly concerned for the quarter mile. Also, is the B-pipe ready yet from Stillen for the 5then gen yet, also looking at adding a POP intake as I don’t want to cut a hole into my car for the CAI.

I need to get things thing faster fast. I’m at nearly 3000Ft above sea level, and on a not so great track, would like to see low low 16’s high 15.s Yesterday I ran a 17.027 and a 16.983


To give you an idea, 12.9 and low 13 second C5 corvettes run about 14.00 to 14.7 here.


Got a C4 as a toy now that I’m building up, and my 5th gener seems much slower all of a sudden 4G for the SC is still a bit costly in my opinion, not sure if its worth it. 4g on a muscle car goes a long way in speed.

I have a y pipe, pretty much the only mod now. Is their a second peice I can get to remove that other cat? Its from Cattman, their site seems to be down.

 

$375 Nos kit

 

Ok, cool, where, and is this kit safe? No one seems to have a good computer controlled kit for the 5thgen. Not at JimWolf, or the the purple bottled kit that I can't remember the name of.

 

http://www.jcwhitney.com/item.jhtml?ITEMID=49791

Then you will need to make it safe:

EGT Gauge - $100 - $200
F/P Gauge - $75 - $200
RPM Window Switch - $75 - $200
Bottle Warmer - $????

 

Anybody know about the the under drive pully and the B pipe I asked about?

 

UDP will probably only add about 1-2 hp. Not sure about the B-pipe.

 

My understanding is that the UDP adds ~3hp and ~4lbft the B-pipe adds like ~3hp and ~2lbft...

Also the RT Cat adds like ~5hp and ~7lbft

Keep in mind that this is my understanding...

 

let me help you out a bit here..

UDP adds 1hp in the low rpm range and looses 1 - 2 in high rpm range
B Pipe more like 1 - 2 hp
RT Cat adds 1 - 2 hp

whoever gave you those numbers must have had a supercharger.. even though the UDP lowers the S/C boost .5 to 1 PSI

 

I always see you pull out these low ball figures on the RT Cat and UDP. My questions were did you get this info from, is there a dyno sheet we could all see? BTW I do not think you are lying or anything like that, I just would like to know how you know. Thanks

The only Dyno I have see of the RT cat was of a 3" RT cat on a NA car and it added like 7HP and a bunch of TQ. This may not have been accurate for multiple reasons though, maybe the stock cat was clogged or the dyno was inacurate?

 

I too would like to know where he pulls these figures from.

A UDP won't loose power up top. That would go against the law of physics. It reduces inertial mass much like running lighter rims. I've seen plenty of dynos with pulleys on 4.6/5.0 Mustangs and 300ZXs making 10-15hp and 15ft/lb of torque to the wheels. These are 2 and 3 piece sets, but the principal remains. The Maxima's crank pulley weighs 7 lbs and the UDP weighs less than 1 lb. 6lbs removed from the crank will make a difference. Unfortunately NO ONE has ever dynoed just testing the UDP.

As for the B-pipe, my car dropped a consistent .15 second and gained over 1mph in the 1/4 mile in HOTTER WEATHER!!!! I didn't feel much on top, but low and mid-range power were improved signicantly for a NA mod.


Dave

 

Dave, do you think the b-pipe is just as effective as having a cat-back exhaust? I have been wanting the small hp increase and don't know wich route to take. Want is your opinion? Also, do you know if the resonator on the b-pipe can be removed? Thanx.

 

1Max2NV has the 1hp gain dyno for the UDP....
I think its Matt aka MardiGrasMax who has the dyno for the RT CAT 1 - 2 hp...

look around the forum.. you will find these things.. i don't make them up..

 

No resonator teamed with a Y-pipe would be pretty loud, IMO. If you want a B-pipe without the resonator, get the Stillen B-pipe. I think the B-pipe is just as effective as any catback. Why? Because I use to have the HKS muffler teamed with my B-pipe. I ran the same ets and actually improved mph without the HKS muffler. The mufflers look nice, but that's about it.

If you get the B-pipe, tell Courtesy to keep the extension piece they sell to make the B-pipe fit the 95-96 Maxima. You need to go to a exhaust shop and get a 6" X 2.5" straight pipe made that goes inbetween the B-pipe and cat. The reason people never saw gains with the B-pipe is because this extension piece Courtesy provides is extremely restrictive and completely negates any gains. This piece is stock on some 97 and all 98+ Maximas and I believe this is why they are a tad slower.


Dave

 

The only problem with that is he owns a 5th gen I30. No one makes a b-pipe that will fit that we know of yet

 

The only problem with that is he owns a 5th gen I30. No one makes a b-pipe that will fit that we know of yet

 

OK, so the UDP and the B-pipe, which I think stillen now has for the 5th gen would not help me much, maybe 2 tenhs or so?

Anyone know how much a Jim Wolf POP intake is honestly worth now that we are talking figures. I'm sure it will work well with the Y pipe. On my 4thgen I has a Y, CAI, and Cattback, and that combo made a huge difference over stock for what its worth.

Also, I really wish they did make headers for us, like Dave talked about before here.

So is this $375 kit really as good as it seems? And has anyone ordered from JC before?

 

I got my kit.. synki got his kit.. its a great price to start off with..