Just got off the phone with Jeff at Budget Exhaust. Nice guy, had some very interesting news about our cars. The current Y pipe for the 99 cali spec leaves the front pre cat in the car. The reason for this is that our cars have 4 o2 sensors which need to measure before and after BOTH CATS. Budget moves the rear o2 sensor over to the front and tricks the ECU into thinking it's getting readings from both cylinder banks, when in reality it's only looking at the fronts. Pretty cool, BUT because of this that pipe will only yield us 5 to just about 10 IF your lucky HP. NOT GOOD. Jeff then tells me they are currently working on a new pipe that will indeed omit both cats and will have some plumbing to accomidate the 4 o2 sensors we have. They will be moved to take readings before and after the rear main system cat. Jeff tells me that pipe and plumbing, which should be available early next year (Jan - Feb 03) should yield gains up to 20HP.

So to all those 99 cali spec max owners, hold off on your Y pipe purchase until Budget gets this pipe made up.

Best of all, the price isn't going to increase, it should stay just about the same. So for the US market with the exchange rate as it is, that puts the tag on a Stainless Steel pipe for our cars at around 160 - 170 bucks delivered!

Not to shabby if ya ask me

Tom

P.S. After 3 weeks of calling WSP and sending email with no response, today I cancelled my order with WSP via email. GUESS WHAT? I got a confirmation from Dallas within 2 hrs which apoligized for the delay and acknowlegded my cancellation. Funny huh? They don't respond to your inquiry on delivery times, but will take or cancel your orders in a very timely manner.

 

That IS some good news!!!!

 

Just get a test pipe to make up the lost HP on the precat.

 

 

Warpspeed
testpipe.com
Local shops

Check these places.

SuDZ

 

I got mine from here.

http://www.maxrev.com/

But I don't know if they are still making them.

Any exhaust shop should able to make you one if they are willing.

 

Would you be able to make up 8-10 hp of gain from a test pipe? Just wondering....

 

If you have a 99 Maxima, cali spec, you put on a Y pipe, and then a test pipe, you won't get CEL's?? How is that? The ECU, via the O2 sensor located after the now non-existent cat, must know something is up, even if you have just the test pipe and stock Y. Can someone explain?

DW

 

You absolutely WILL get a CEL. Unfortunately the Cali Spec ECU monitors both pre cats. The sensors are in each manifold (before cats) and in the down pipes (after pre cats) The reason they leave one pre cat in the current Y pipe for cali spec is simple. They trick the ECU. You simply move the rear after cat sensor, which allows you to remove one pre cat to the front pipe (existing oem pre cat) and the ECU will still see after cat readings from both o2 sensors. It will have no clue it's looking at only the front cat for after cat readings. The sensors in the manifold are the ones that adjust air/fuel. The ones after the cats just monitor the condition of the cats themselves.

The way to remove both pre cats is to move the location of the two after pre cat o2 sensors in the front of the car to way back behind the main exhaust cat in the middle of the system. When thats done, the ECU will now see two o2 readings before any cats, and two o2 readings after a cat. Again, it woun't know it's reading the main cat instead of the pre cats. Budget is working on the complete Y to eliminate both pre cats and some additional exhaust plumbing the will pipe into the OEM system after the main cat for the o2 sensor readings after the main system cat.

 

aaaa



i have a cali spec...



i have a test pipe..



i have no CEL




there is no 02 sensor after the cat.. all the sensors are on the y pipe and pre cat...

 

whoa thanxs for the info. I have a 99 cali spec max and i was gonna order a budget y this coming pay check. I didnt know our max's are slower than the other years but i heard nothing about great things about the y-pipe. Ill be sure to get the new and improved y-pipe next year. thanx for the info once again. also nice max. I love the that color.

 

I have a 98 Cali spec. It definitely has an O2 sensor after the cat. How can a 99 cali Max not have it??

Thx for the explanation NJMAX.

Man, the 99s used to be my favorite, with their red SELs, perffed leather etc. But the emissions lockdown that Nissan engineers put on the 99 VQs makes it hard to work with aftermarket. Sheesh.

DW

 

So I can buy a 98 cali-spec y-pipe and put both after-pre-cat o2 sensors in my b-pipe, and I should be kosher?

 

Buy a fed spec and put both o2s in the B pipe. That will do it cause the B pipe is after the main cat. The fed spec will eliminate both pre cats. The cali spec pipe wount. The pre cat sensors are in the manifold in cali spec.

 

interesting...

so how do you think this
would compare to
?

and what kind of "plumbing" do you think would fix this? wouldn't they need to do the same thing, relocating the 2nd set of o2s to after the main cat?

 

I have no clue. He did mention that the fix for this would not need us to move the sensors that far, thus no cutting and extenting of the o2 leads.

 

any idea where the wsd y pipe connects????? Cause hopefully my y pipe will be shipped soon from them

 

any idea when budget will release there new 99 cali spec y pipe?

 

is this in reference to what Jeff said about not having an O2 sensor after the cat, because uhhhhhhhh i dont happen to have any o2 sensors after my cat either.

 

i think it's about a y pipe replacing the remaining precat that none of the other y pipes replace....i thnk, but not sure

 

yeah, that's what I got out of it.

 

hey are these out yet? what's the website?

 

www.budgetexhaust.com

I'd give them a call and ask them.

 

Still waiting for them to get back to me. 3 weeks and counting.

 

Let us know when you find out?

 

Well, just talked to Jeff at Budget and he said that nothing has really changed. So now I'm He said that he has never had a problem with his y-pipe design. Anyone else want to give him a call and post here???

 

Yeah but everyone with a 99 cali spec y pipe has a problem, because we still have a remaining precat and didn't they say something about prototyping one that replaces the precat?

 

maybe budget and custommaxima have the same pr guy