Fast Intentions Stage 2 TT build by MA-Motorsports.

Spooler

New Motec Map sensor kit shipped today. Not too bad of a price considering what may happen to your engine if it fails.

FL 4Motion

If it fails you can trade up to a upcoming c8 z06…



(Or just ls swapping your z )

Spooler

Nah, I won't be letting go of my 370z Nismo.

FL 4Motion

I don’t blame you, you’ve kinda committed to it at this point.

I hoping you’ll be able to come back down this aways at some point for a track event so wifey and I can finally check it out.

Spooler

One day when they have a 1/2 mile event at a decent location. Ocala sucked.

phunk

5 BAR actually! So you're clear for about 55-60psi boost now.

Attached preliminary / mock-up photo. I made this little billet adapter that bolts in place of the stock MAP sensor on the intake manifold. Then a hose leading to the MAP sensor that attaches to an existing firewall hole with a simple loop clamp, or anywhere else someone wants to attach it (clamp fits typical M6 stud/bolt). There is also a Plug and Play harness extension not shown.

These adapters are going out for black anodizing. Spoolers car has a pricey XRP hose but I will have less expensive hose later. Spooler also went with the top tier MOTEC sensor but I will also offer the AEM stainless 3.5 and 5.0 MAP sensors, which I have on the way here now. Should have these MAP kits setup for easy ordering in maybe 2 weeks when I get the parts back from anodize and take final pics.

Attached Images

MAP.jpg (456.9 KB, 32 views)

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Spooler

Next week is going to be Christmas at SOHO. Several parts showing up.

redondoaveb

Is there any benefit of the Motec 5 bar sensor over the omni 4 bar for guys that aren't making high boost?

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Fast Intentions "Stage Seb" twin turbo #098- Specialty Z/Tial-Xonarotor/CJM/Ecutek/HKS/KW/SPL/Hotchkis/Rohana/Toyo
750whp/700ft.lbs

phunk

This was more about using a motorsports grade sensor than the boost level itself. As far as boost level alone, a 4 BAR is plenty for nearly any VQ build we’ve seen. I think that the OMNI sensor has and does work well for a lot of people, but that there is a place for a next tier solution once moving to more demanding conditions, possibly even more so when using an aluminum manifold that doesn’t insulate the MAP sensor quite as well as the stock plastic manifold will.

I feel like I need to explain exactly how I ended up on this so that it makes sense.

What kicked this project off was having recently killed 2 of the aftermarket OEM form factor MAP sensors in my GTR in a short time, and the second failure creating a very unsafe condition for the engine. The first failure disabled the car, which was merely inconvenient. The replacement unit, after a few thousand miles, started reading a few psi low. It happened while a trusted friend had borrowed the car to take someone else on a 20 min joy ride with it. I noticed when I went to leave later that the car was starting rough and hesitating at roll out during normal driving. So I logged into ECUTEK to find that the car was running extremely lean due to misreported MAP. Who knows how early in that joy ride it started, while someone who doesn’t drive the car regularly may not realize that something is off. It could have cost me the engine.

So I decided I wanted a new solution. My GTR is nothing crazy in the engine bay, it’s a maxed out stock engine roughly 850whp. So I started asking around the GTR tuning community and found that these style sensors have a poor reputation amongst them, which was interesting to learn since they don’t carry that reputation in the VQ world (not that I have heard of at least). One well known tuner told me that he used to always make sure to carry a spare in the glovebox, and that was all I needed to hear.

So we can look at what separates the conditions for the 2 applications, and that is going to be that the average everyday tuned/bolt-on VR38 is going to be running higher boost than our average boosted VQs, on average put through more abuse with heat and race conditions, and the VR38 has an aluminum intake that is going to have increased thermal and NVH transmission to the sensor. So just harsher conditions all around, comparing typical usage scenarios.

Spoolers Z is recreating every bit of those harsher conditions, and more, than it took for my bolt-on GTR to kill 2 of the sensors in short time. So while addressing this issue for my GTR, I used my Z (my Z never had an upgraded MAP sensor, I stopped at 670whp still MAF tuned) to make a kit to offer to my Z customers. I figured the timing felt just right as we are seeing engine programs keep the headgaskets together lately and we’re going to be seeing the VQ put through harsher conditions as things progress.

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redondoaveb

Thanks for the explanation Charles. Something I'll have to discuss with Seb when he gets ready to do my FI install

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Fast Intentions "Stage Seb" twin turbo #098- Specialty Z/Tial-Xonarotor/CJM/Ecutek/HKS/KW/SPL/Hotchkis/Rohana/Toyo
750whp/700ft.lbs

Spooler

It is cheap compared to a new engine and down time so I chose to get it while my car was at SOHO. I am sure Nick will enjoy playing with it to see what he thinks.

Spooler

1 out of 2 packages have been delivered for the Motec Map sensor upgrade. Moving on along. Wednesday is the big day, intercooler is coming back from coating. Fingers crossed it makes it on time.

Spooler

Should get the 2nd package tomorrow for all the parts for the MOTEC Map upgrade.

Spooler

Then, time to make 2- 3in intake pipes to turbo. Need some filters too fall out of the sky though. Stuff is getting hard to get that shouldn't be.

FL 4Motion

So those dyno sheets you posted recently, that was still on the stock ic? Wow.