The Tomei Expreme were designed with the purpose of a direct performance upgrade from the factory setup so the turbine can be kept at a factory position. Made with SUS304 for durability. Fits S13/S14/S15 SR20DET.
Our EXPREME exhaust manifold is now available for SR20 owners who want a performance upgraded from the genuine exhaust manifold. With our product you can retain the genuine setup and no special modifications are needed to fit the standard turbo. With the SR20DET the exhaust manifold was designed to be close from the exhaust port to the turbine. With the comparison test of our isometric prototype & the factory genuine manifold which also utilizes the same layout, it shows that ours has succeeded in delivering an overall improved performance in both torque and power increase in areas like in the higher RPM range in which you were not able to utilize before. With our extensive testing we have reached the conclusion that the normal design is superior as a total overall efficiency. So to develop an exhaust manifold similar with the design and setup as the factory manifold we were finally able to produce a product worthy to bear our name as a product that has the potential to deliver an overall increase in performance.
Kit includes the following:
Expreme Thermal Bandage
Bolts Smooth Plate
got my first manifold crack today 2 years after hard use
Posted by 7789871567 on
it cracked in the weld to cylinder 4 isnt to bad rill just get it retiged this is hard use of daily driving for 2 years. a little disappointed but id still recommend them.
Bought this for my 1988 Silvia S12 with S14 SR20DET swap.
Posted by Chris blair on
Easy install comes with everything u need sept the 4 bolts for the turbo.
this with the s15 dd turbo and the tomei turbo outlet pipe and 3 " exhuast and its sounds soo good and starts building boost instantly at 1200rpm!!
Very good choice
Posted by David on
Just installed this manifold and replaced an Isis manifold. First of all the Tomei headers just look more quality in the engine bay than isis. Throttle response is pretty amazing, my exhaust setup is so much more legit with tomei. I just wish tomei made a downpipe (why not??) and exhaust. I also got a tomei elbow which is awesome too.
Super thick flanges!
Posted by Nick on
You can just hold this and tell its a very well built piece compared to an isis manifold or xs power. The small design keeps your oil blow back lines out of the heat and you will have a super quick spool time paired with an s15bb turbo. Comes with a 7 manifold layer gasket, 4 layer turbo 4 bolt gasket, locking tabs, studs, copper crush washers for oil/water lines...all high quality parts. Only thing it didnt come with were the turbo nuts.
Posted by Unknown on
Unlike the aftermarket turbo manifolds priced $200 or less, this one will not break after a few hundred miles. I would know first hand.