GP Sports vs. Greddy Turbo

[importracer45]

which turbo kid would give me more hp and by how much. Also doesnt the greddy come with more parts than the GP sport on or is it just the picture?

[hokiruu]

you're asking too general a question. I think there are several greddy turbo kits and each gives different hp. apparently the GP sports IHI kit is claimed to make 325hp at the wheels, but I'm be a little skeptical, because they didn't say with which other mods. do you want a bolt on turbo (IE: same flange/location as stock) or switch to something top mounted

[importracer45]

i was just looking at the two on srswap.com and id probly rather just go for a bolt on cause its more or less a daily driver and i dont wanna mess around to much

[ItzGenX]

I've always wondered what the max effeciency of the GP sports turbo is. Their claim of 325hp is at 1.2bar (17.64psi). Then again, we have these top mount t3/to4e turbos running 400-450hp @18psi with cams. Does cams really make a difference or is 1.2bar close to max efficiency of this turbo.

It's not like I am going to buy it, just curious. I am more interested in the Apex'i AX53B70 factory replacement turbo. It is popular among drifters in Japan with RB and SR motors. The B70 (not B60--350ps--) model is rated at 400ps.

[Tai Mai Shu]

im getting the GT25R, bolt into stock location, injectors and MAF to follow!