These graphs show the comparison between IPS-Ksc cammed, CTSC RSX-S (green dotted line) vs. IPS-KT1 cammed, 3071R-WG turbocharged RSX-S (light blue dotted line). Unfortunately, we couldn't get exact psi levels in common for both setups. This is the closest comparative data we have currently. As you can see, the turbocharged setup is a lot more efficient in the midrange even at lower boost levels. It is only at the top end where the SC begins to make more power. We believe that with a better 4-1 header, the SC setup will begin to utilize the increased/sustained boost levels now realized in the midrange powerband. Remember, SC parasitic losses are estimated ~30hp alone. In conclusion, for moderate boost levels, psi for psi - there now seems to be power parity between either flavor of forced induction.

-Ron

 

seems like turbo rsx is having some boost creep issues? looks like it's set at 9psi and creeps to 10psi, where as s/c is set with 10psi pulley. also, the turbo car look like it could use some tuning up at the high rpm range? there's a dip in hp and tq around 6500rpm?

 

over 300 hp on a supercharged 4 cylinder under 10 psi? hmmmm. I guess thats right...

 

hmm.....decent info....a better test could have been done though.


but for trying

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Bay_707 &raquo;</TD></TR><TR><TD CLASS="quote">over 300 hp on a supercharged 4 cylinder under 10 psi? hmmmm. I guess thats right...</TD></TR></TABLE>

yeah he must be a friggin liar

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by m R g S r &raquo;</TD></TR><TR><TD CLASS="quote">hmm.....decent info....a better test could have been done though.


but for trying</TD></TR></TABLE>

I agree. However, it wasn't a purposeful intent to directly compare the two as they are two completely separate vehicles and setups. It's just data we have collected along the way during our development. People have inquired regarding pros and cons between both SC/TC setups. This is the first K-series specific data that explores the dichotomy. Perhaps later down the line, we'll equip the same motor with both SC and TC, isolating a common boost level as much as possible.

-Ron

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Bay_707 &raquo;</TD></TR><TR><TD CLASS="quote">over 300 hp on a supercharged 4 cylinder under 10 psi? hmmmm. I guess thats right...</TD></TR></TABLE>

You're missing a very important factor: K20A2, not just any SC'd 4 cylinder. This is on C_A_T's Dynapack 2000 which reads ~8% higher than local Dynojets in our area. The SC'd RSX-S previously ran 12.986 @ 108.14 California Speedway 6/18/2005 (285hp street tune) @ 9psi (stock cams). It will be hitting the track soon for updated ET/Traps.


-Ron

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Tad &raquo;</TD></TR><TR><TD CLASS="quote">

yeah he must be a friggin liar</TD></TR></TABLE>

You're both welcome to visit us down in SoCal at Church Automotive Testing. I'll ask the owner to bring his car in for demonstration. Please schedule an appointment as to when we should be expecting your honorable presence.

-Ron

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by ash.zero &raquo;</TD></TR><TR><TD CLASS="quote">seems like turbo rsx is having some boost creep issues? looks like it's set at 9psi and creeps to 10psi, where as s/c is set with 10psi pulley. also, the turbo car look like it could use some tuning up at the high rpm range? there's a dip in hp and tq around 6500rpm?

</TD></TR></TABLE>

The actuator's native boost level was ~10.5psi. The Blitz SBC idIII couldn't regulate it below that. The turbo car was further tuned at higher boost, this graph was mid-tune and was the only chart that we had remotely close to the SC boost level.

-Ron

 

haha I was being sarcastic,
didn't like what he was implying

I like to see a SC beat out a turbo for top end power for once,
(note my setup in my sig )

 

Yeah, I sensed that - so I upped the ante a little... with more truth

-Ron

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by edo &raquo;</TD></TR><TR><TD CLASS="quote">The actuator's native boost level was ~10.5psi. The Blitz SBC idIII couldn't regulate it below that. The turbo car was further tuned at higher boost, this graph was mid-tune and was the only chart that we had remotely close to the SC boost level.

-Ron</TD></TR></TABLE>

ahhh, finalized tune for both vehicles at same boost level would've have made this test much better...still, good info for what it is...and effort

 

Again, this was not a head-head test pitting the two. They are two distinct applications that were never meant to be compared from the get go. As I've expressed previously, a proper test would be conducted on the same motor for both supercharged and turbocharged applications for pertinent and relevant comparison under strict controls. There was no effort in presenting the above data. We had charts for both done on the same dyno, just loaded them up for "an idea" of what the two look like to satisfy certain curiousities, nothing more nothing less.

-Ron