1. Does anybody have a good HPSI ratio for a greddy tdo4h turbo?
2. How much hosepower can a DOHC ZC's stock internals handle with a good tune ?(Please don't get extremely specific with tuning quality. I'm just looking for a estimates on these)
Thanks

 

we'll need more specs on the turbocharger. your description is VERY generic. personally I wouldn't push more than 200whp on a STOCK sohc engine.

How fast is my Honda would be a similar quesiton...
Answer: It depends...do you have a CRX or a NSX?

 

The turbocharger is a GReddy TD04H-15G 8cm2 for the 92-95 civic.
And its not an SOHC its the 92-95 JDM DOHC ZC

 

check out stealth316.org...I think he has compressor maps for 14b's and 16g's. It will give you a decent idea of what pressure/ppm the turbo will flow.

if you need help reading the compressor map...www.turbobygarrett.com