Originally Posted by
rcompart
If it's your only mod, you can probably get by but if you have the other power adders, it's another story. Monitoring your AFRs and fuel pressure are the only way to tell for sure. I know a lot of guys have because it's a relatively easy way to make sure nothing falls out of line.
And possibly additional cooling if not already considered.
I chime in every now and again with calcs.
Stock Pulley on EC dyno...
http://www.eurocharged.com/graphs/c3...Tuned_Dyno.jpg
they also show a 185+tune but discount that....
note assume the C32 to be the same car as the SRT6 but in mercedes guise...
So keeping to 12AFR & 6000rpm & 122F AIT, 18% transmission loss, 65% SC eff., 68F Ambient
-----pulleys----------rwhp-----air intake-----fuel-------fuel-----------fuel --------Cooling required---MAP*
------------------------------------cfm--------g/sec----cc/inj/min----lb/inj/min-----kBTU/hr----kW----- psi
Stock---74/155-------
290---------649--------30.4--------476---------45.3--------------37------11--- 13.4
DCAI ---74/155-------
297---------665--------31.2--------488--------46.5---------------42------12--- 14.1
ECStock-65/155------
316---------734--------34.5--------539---------51.3--------------61------18--- 17.1
62Stock-62/155------
326---------768--------36.1--------564---------53.7--------------71------21--- 18.5
62DCAI-62/155-------
337---------791--------37.2--------581---------55.3--------------78------23--- 19.5
65DCAI-ASP-65/178-
359---------866--------40.7--------635---------60.5-------------102------30--- 22.7-----STACKED! 328kW (437hp) Crank - sub 11 sec 1/4mile car
62DCAI-ASP-62/185-
371---------907--------42.6--------665---------63.4-------------116------34----24.5-----STACKED..339kW (452hp) Crank -
Missile Status
notes:
- Some have run to 6700rpm
- Some aim for 10AFR for ++ cooling.
- Its reported SC eff. drops of quite a lot above 20psi and/or 6000rpm (not accounted for)
- If its hot (95F) and humid....add 10kW (34kBTU/hr of cooling required)
- diff between cool (68F) and hot (95F) weather = 9rwhp or roughly the same as a DCAI
- at least to 22psi - some achieve the required cc/min from the stock injectors via increasing fuel prs, manifold linking and looping fuel the rail
- I understand the stock inj. are rated for 480 cc ...
here...
- stacked >16,400rpm SC speed = have a spare handy...;>)
* If you're seeing higher psi than this it is most likely because your AIT's are >122F, that will lift pressure.
with the caveat -
theory and reality are sometimes very different things....
AIM HIGH AND SUCCEED!