[quote name='teknics' date='May 19 2005, 02:38 PM']the s4 is ht-18, s5 is hx-18.



kevin.


[/quote]



No they're not. Sorry for not clarifying.



S4= HT-18S

S5= HT-18S 2S



But they are still both HT-18's, the S5 is just a revised version of the S4. Just like the 13bt, and 13b-rew. Same ****, minor differences.



BTW it's equivalent to a small T4, large T3.

On my old computer I had a compressor map for it, not anymore..



The turbine a/r of series 5 is; 0.5