The Injen is a true dual exhaust, way more than Borla and Stillen. The tips are 3 or 4", can't remember, so the piping is probably 2 or 3". It makes about 15hp to the wheels compared to Borla's about 12hp to the wheels.

 

I don't know but they never called back and they are only a couple hours from me so I will take my businsess elsewhere.

If the tech support department didn't know the size of their only catback pipe tubing they have issues anyway.

 

Hey Max,

Can't wait 'till you get your ATI installed. I think depending on your experience (after install), I'm going to see if I should buy the kit or not (even though 400 RWHP is enough for me). After you get yours installed and dynoed, you should list all the mods you have so others can get an idea of what to get done to their cars in order to, hopefuly, make them Z06 killers. How much did the SC cost you with installation? Congrats

 

I have a couple more questions

What is CARB?

Why didnt Nissan engineers build and offer a stock supercharger? The aspect of a factory built and installed supercharger is more appealing because the warranty is not void.

 

Max: This exhaust guage you have, is this something that the average Joe who will not be racing his car (i.e. ME) needs or is this mainly for racing applications? Also, is it something used just to tune the car initially, or is it something you will refer to on a daily basis?

Thanks.

 

Bonz I consider the guage a must, Mike's car has one and it tells you what numbers to punch into it. His car has gained 10HP already since using the guage do tune. 10HP is allot and remember that temps change from season to seaon and you never want to run too rich or too lean so in the winter you can take your exhaust readings to get A/F and call Mike and ask him what to punch into the FMU (a big advantage of going through him cuz his has been on the Dyno all day.)

It also has a warning light which is a good safety feature, even my budies stock GTP has built in guages, I would get it. You don't have to get GReddy but you do need one that comes with a tap into your exhaust to get the readings.

g35or350z,

CARB only applies to Califronia Air Resourses Board. If you pay them enough they will issue the product what is called an E.O number or exemption Order. With this "Carb #" your car is California Legal and can also pass smog w/o the # no smog cert.

Redline350zTour

I am not gonna quote prices to be fair to other vendors but I will say I wouldn't pay more than 5k for the kit and 65 an hour for labor so that should give you some numbers to work with either high or low.

As for exhuast it's done.

I just ordered all Stainless Steel, Borla Headers and Dual Catback
$1300.00 for both including shipping to my door and tax. One less think to debate and research.

So the only difference in my car now will be headers exhaust and plenum and plugs.

I bet I get about 385 RWHP at 7psi and that's quite a bit.

That is a 12.1 car with DR's and I have ET Streets.

I hate posting stuff becuase I don't want to appear to be bragging so I think it's time now to wait for everything to get here and post pictures and times and stuff.

Iff it makes anyone feel better I charged it all!

 

I think you just quoted the dimensions for every exhuast made for the Z Injen dual piping should be 2.5".

Max,

Congrats on the exhaust decision. I would have went another way on the headers, but you can't beat the Borla price (which is why i'll probably end up with them), especially after you spent all that cash on the SC already

Oh and where did you/ will you install the bung for the exhaust gauge? I'm seriously considering one of those.

Dan

 

I bet your credit card compnay is happy Can't wait to see your rwhp numbers!

 

1/4 inch tap in the exhaust intake manifold (or header) as close to the engine as you can get for the most accurate readings.

I'm happy wth my decision Summit Racing actually had both in stock and they get stuff to me from Arizona the next day free shipping and no tax. I love Summit and use them whenever I can.

1300 for both delivererd?

Remember when all we had here was pics of concept headers for 2 grand?

Things are looking up for us Z owners when Summit has parts in stock I tell ya!

 

Like Max said, the EGT is a very useful tool in tuning the car, especially if a wideband O2 sensor is not available. It's also useful during "spirited" driving, which I'm sure none of us are strangers to. You can monitor your EGTs and know if things start leaning out. This is especially important when going FI. Thats why guages with a warning feature are nice to have. It's a peace of mind kind of thing when you have it. In the event that something does go wrong, you'll know about it and be able to react to it.

As far as where to mount the probe, Mike has his tapped into the passenger side collector of the stock exhaust manifold. The same location would probably be fine for aftermarket headers as well. Now if you want to get even more detailed readings, you could get two EGT gauges and tap one into each exhaust manifold. That way you can know the EGTs from each bank of cylinders.

As soon as Mike does some more tuning I will let you guys know what happens. I'm not sure when he will get to it, but he or I will post some numbers when we have them. The procharger looks really nice in the car and it sounds mean even at idle!

 

Wow, all the way down at the collector? That's not where I was planning on putting mine at all. It seems like way down there, it would be really subject to ambient air temperatures. I would think that you'd want to put it on the output of the leanest running cylinder, that way you've got the most accurate reading because you're closer and you're reading off the engines most vulnerable position / weak link in the chain.

On my turbo'd aircooled VW's I always put them on the output of cylinder 3 because it got the hottest and usually ran lean.

I suppose if you heat wrap the headers it won't make any difference though.

 

What was the theory behind putting it down at the collector? Did you guys do any surface temp readings or any analyzing at all or was it just that you wanted to analyze multiple cylinders?

 

Can you guy spost pictures of the kit installed?

 

Yeah, I'll ask Mike about that when he has a spare second. He's a busy guy! I was wondering about that too. I drive a 300zx TT and the guys I know who have EGTt put them in the exhaust manifold before the turbo, just outside the 5 and 6 cylinders (the two rearmost cylinders which are subject to higher temps due to their location and the VERY hot temps under the hood).

They are mounted there because those, being the hottest cylinders, will give the EGTs that are the most extreme and the most important. Same thing you did with the VW.

Again, when Mike gets a spare second, I'll ask him more specifically where he put the probe and what his theory behind the location is.

 

I took some of it with my personal camera the other day, but I left it at home. I'll see if we have a camera here. If not, I'll try and post them tonight when I get home.

 

I'll have plenty of pictures to post when I get my kit...if they would just hurry up and ship it!!!!

 

I have pics of JIC's 350z from hyperfest. I'll make sure I post them since they have the procharger installed on it I got a close up of it and a shot of the whole engine bay...

-non

 

I placed my order with Altered Atmosphere today, and you should see pics of my car on the Website in the next two-three weeks.

 

I finally got a chance to ask Mike about his EGT probe location. He said it is in the collector, just after where all 3 tubes come together. He said this way you get the reading collectively from all three cylinders. The same location would be fine with aftermarket headers as well.

He also said that there isn't any notoriously hot running cylinders as of yet, that he knows of. Thats why he did not mount them just outside of any specific cylinders.

 

Hi Spencer,

Great info thanks for sharing it.

I know it's Friday so no rush but can you ask Mike about the cylinder pressure and flow in realtion to my Crawford Z Plenum and if this would effect where I tap into my Borla Headers?

Because extensive Dyno research from DougsZ did prove that certain cylinders were starving for air and I want to do it right the first time. My air flow will be different than the ones with stock plenums. This info may benefit others too as more people decide to switch plenums or do other mods that add more air.

Also do they make a Y that would tap into both sides passenger and driver or is that wishful thinking? You could have two taps then a Y into the SS braided hose? By the time it reaches the collector how much do you think the temp may have changed? Nil or moot?

Thanks again for representing the product the group and Mike we all apreciate it.