StubbyFoil

RB335, I would be interested but I'm using the Full-Race EWG manifold that sits differently than the 6 Boost.

Man, I got the email from Full-Race that the 8474 was back in stock! Not even 30 minutes later when I checked, they were all sold out. I really wish to get my hands on one of these once my car is up and running with the Precision. I'm even pre-fabbing up coolant lines/fittings and running them looped so its just a downpipe change away from a turbo swap once I finally get one. Bump for more real world info on the 8474. I'm looking at the 1.45 housing for my Nitto 2.8/mild port head, GSC S1 cams, shimless bucket setup. ::Fingers crossed::

I guess my main thing is I've always wanted a Tomei titanium exhaust (I'm a RICER, I know). I finally bought a Tomei ExpremeTi exhaust last Black Friday, so I've committed to 3.5". I haven't bought the materials to make the downpipe yet, waiting on my engine back from machine shop. I'm trying to figure out the best route to go as far as downpipe back to the Tomei. I could always sell the Tomei, and build a custom exhaust, but bolting on a quick titanium system is much quicker than building/TIG'ing a custom setup. Plus I want to live out my childhood (RICER) fantasy! haha I will check out SP mufflers! Thanks for the insight! Is there any ETA when these other turbochargers will be available? It seems that they are trickling back into the market, but most shops have 6 month or longer wait times.

Thanks for the reply Geoff! I am running a PPG sequential, and I got a really good deal on the 6870, so I figured I would try this turbo and see how I like it. I figure once spooled, the transmission should really help keep me in the sweet spot of the turbo. If I feel like I'm not happy with transient, then I will definitely look at an EFR, which is what I originally had my heart set on anyways. Any ETA's on the 8474? Or would you recommend the 9274 for around 800whp 2.8l? Also, I'm thinking about just doing a 3.5" downpipe and exhaust, but running either a boost activated loud valve or just an electronic cutout. Maybe I will try this same concept but with 4" downpipe, and have the cutout in the 4" section. Either way, the cylinder head is finished, and the long block is almost done at the machine shop. I will be sure to post results with the data I've collected from dyno. Thanks again for all the info!

The Mafia, this is awesome information! Is the boost number relative or absolute pressure? Also, are you only reving the engine to 7,300 rpm? Any reason? An EMAP sensor would be neat to look at! I am currently building an R33 GTR with almost the exact same setup, Nitto 2.8, GSC 268/270 cams, mild port head etc. My dream turbo was the EFR 8474 Black, but they are nearly impossible to come by, so I went with Precision 6870 T4 1.0 A/R on a Full-Race divided manifold. I'm hoping for about 800whp on E85 at around the 30psi mark. I will be running most of the same sensors, including EMAP on the dyno, so it should be fun to compare! Also, you mention 4psi exhaust backpressure. You are making me regret choosing 3.5" titanium exhaust. Do you think a 4" downpipe with a 3.5" exhaust would help? Or maybe a cutout? Thanks for all the great info!

I am currently building a Nitto 2.8, GSC S1 Billet cams, Headgames pocket port/shimless bucket head in an R33 GTR. Shooting to make a reasonably responsive 850whp for a street car when in "kill mode". I wanted to go the EFR 8474 Black series, but they are no longer making certain EFR's until further notice. I ended up getting an awesome deal on a Divided T4, 1.0 AR turbine Precision 6870 with the T51r mod for $2100 brand new. This turbo is very similar in size to the EFR 8474, but obviously uses different materials. I think spool should be around the same (all in around 4,500rpm) and I will be revving to about 8,500. Also using a PPG sequential, so once its spooled, it should stay there, which is why I may consider going larger turbo later. This will all be sitting on a Full-Race divided T4 twin 44mm wastegate manifold. My theory is that I will try the "smaller" Precision 6870 before jumping up to a 9180 or even 9280 EFR that are actually available. My engine is almost finished being built, so the car should be running in the next 4-6 months from now, although it wont likely be tuned on E85/full boost for a few months after initial startup. I will stay tuned and update once I have results.

I just went through this same issue in the USA. The part is discontinued, and there was only a couple really beat up senders for sale on ebay. These are very tempermental, and break/corrode very easily. I found a company in Seattle, WA that makes aftermarket senders and I had them make me one to my specs. Its a 0-90ohm sender, which is the same as OEM Nissan. Its 18 inches long, and is E85 compatible (which costs extra). The company is called ISSPRO. The custom part number should just be "R33". I dont see it on their website, but if you call them, and ask for Don, he should know exactly what youre talking about. I think they charged me $175 plus shipping, but honestly I didnt care because most of the used, beat up OEM senders were that much or more. Hope this helps! EDIT: Their custom made sender slips into the factory "clamshell" of the OEM sender. I popped open the OEM sender by pressing on the tabs, opened the clamshell and gutted all of the OEM electronics. Then I trimmed about 1" off of the top off of the OEM clamshell, and slipped the aftermarket sender in. Drilled a couple holes in the clamshell for zipties and ziptied the sender at top and bottom so it doesnt bang around inside the fuel tank or clamshell. It uses the OEM bracket inside the tank and hangs there just like normal.