Sup Honda-Tech? I currently have a 2000 Si with a Greddy 05h-18g turbo kit and intercooler with stock internals. (It came with the car.) I am going to completely redo the kit with the following:

Custom Welded Piping
550cc injectors
Honda S300
GSR Cams
Walbro 255 Fuel Pump
Moroso Oil Pan w/STEEL BRAIDED oil return line (not the cheap rubber one )
Profec B Boost Controller
Upgraded Exhaust Mani (maybe Lovefab) w/tial 38mm ext wastegate
Greddy Type RS BOV
3 inch downpipe and exhaust
AEM Adjustable CAM gears
AEM Pulleys
AEM Fuel Rail
And a very good tune @ 10.5psi

My question is, will the Greddy Turbo be able to achieve 300+ whp on a set up like this, or will I need a better turbo? I'm going to go to John @ LHT performance, and they do some awesome tuning. Thanks in advance for your help!



Modified by EM-One at 3:52 PM 6/5/2007

 

I believe around 280-300 is my assumtion.

 

Thats pushing it on the little Greddy turbo.. They usually max around 275whp with your setup. But there is a whole thread on Greddy turbos somewhere..

 

Really? Even with the completely upgraded kit? I tried to do a search for the turbo, but I couldn't find anything specifying the max HP for the turbo.

I'm not sure exacly what trim size the turbo is, but I revised the original post with the actual model of the turbo: 05H-18G. One thing that I do know is that this turbo is larger than most of the Greddy Kits I've seen.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by EM-One &raquo;</TD></TR><TR><TD CLASS="quote">Really? Even with the completely upgraded kit? I tried to do a search for the turbo, but I couldn't find anything specifying the max HP for the turbo.

I'm not sure exacly what trim size the turbo is, but I revised the original post with the actual model of the turbo: 05H-18G. One thing that I do know is that this turbo is larger than most of the Greddy Kits I've seen. </TD></TR></TABLE>

That is a 640cfm turbo. about 45lbs/min. its about as good as 330whp, but that is EXTREMELY pushed, and neither the wastagate nor the wastagate hole or flapper will support that at all.

 

I am curious why you want to run both the Hondata s300 system, and a Greddy boost controler? The s300's boost controler is top-notch, and offeres you the ability to run gear-dependant boost levels... Your setup looks solid, and the Greddy/mitsu Td05-18g makes for a fun daily driver turbo, but I think it will fall a bit short of 300whp. I know that it can be pushed to that level, but it will be well out of its efficiency range at that point. Best of luck to you.

 

Thanks, TheShodan! I am actually going to upgrade my exhaust mani to something higher quality then the cast log like a Lovefab ps/ac compatable, and switch from the stock internal wastegate to a Tial 38mm wastegate.

This is possible, right? And if so, what do you think I'll be running @ 10.5 psi with this set up?