JTM

</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by Ragtop 99:
<strong> </font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by JTM:
<strong> </font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif"> Dynatech 1 3/4 - 1 7/8 Stepped Headers with 3.5" Collectors and Custom 3.5" Y-Pipe by AAP </font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Whats wrong with his exhaust, what could he do to pick up 25rwhp? J/C </strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Look at the graph. Without the cut-out open the motor starts choking at 3600 rpm (red line). Its down about 23 RWHP and 25 RWTQ compared to the open cutouts. (blue line) </strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">I thought you were talking over the cutouts. Misunderstood. <img border="0" title="" alt="[Wink]" src="gr_images/icons/wink.gif" />

John B

iTrader: (10)

</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">quote:
Dynatech 1 3/4 - 1 7/8 Stepped Headers with 3.5" Collectors and Custom 3.5" Y-Pipe by AAP
--------------------------------------------------------------------------------Whats wrong with his exhaust, what could he do to pick up 25rwhp? </font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Everything past the merge collectors needs to go! Either a 4" Mufflex or preferably true duals with an "X" pipe!

JP98SS

4" Mufflex = LOUD
True Duals = LOUDER

Any quiet options?

Nine Finger 02 Z28

iTrader: (11)

</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by JP98SS:
<strong> 4" Mufflex = LOUD
True Duals = LOUDER

Any quiet options? </strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Come on JP my car isn't that loud is it? <img border="0" title="" alt="[Eek!]" src="gr_eek2.gif" />

<small>[ March 02, 2003, 10:48 PM: Message edited by: Nine Finger 02 Z28 ]</small>

Terry Burger

iTrader: (4)

I still need to do a before/after dyno with mine, but I bet I lose less than 10rwhp!

JP98SS

Terry, your car is louder than mine. I want to be able to go WOT without alerting every cop within a 10 mile radius. Can't have fun with the police on your *** <img border="0" alt="[evil]" title="" src="graemlins/gr_devil.gif" />

ROBS SS

iTrader: (7)

hey, Try mine JP ,I dont think I lose anything with mine <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" /> "TRUE DUAL 3 1/2" " <img border="0" title="" alt="[Wink]" src="gr_images/icons/wink.gif" />

383ss

iTrader: (14)

awesome numbers!!! I don't think it's peaky at all. Just looks like it since the graph isn't very wide.
I hope to get my 382 close to 500rwhp some day....

<small>[ March 02, 2003, 12:53 PM: Message edited by: 383ss ]</small>

LSs1Power

iTrader: (5)

</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by JP98SS:
<strong> 4" Mufflex = LOUD
True Duals = LOUDER

Any quiet options? </strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Loud Mouth <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" /> and by the way very impressive numbers, Congrats.

JP98SS

AF is right around 13:1. Dips down to 12.5:1 for a few hundred rpm right around 6K. BTW...this was with regular pump gas (91 octane). I bet that we could squeeze a few more hp out with race gas and more timing <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" />

John B

iTrader: (10)

</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">True Duals = LOUDER
Any quiet options? </font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">I have true duals with "X" pipe and DynoMax Super Turbo's and tailpipes after the muffler. The car is very quite except at WOT. Nothing will keep a low restriction exhaust quiet at WOT IMHO <img border="0" title="" alt="[Frown]" src="gr_sad.gif" />

Terry Burger

iTrader: (4)

</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">
Terry, your car is louder than mine. I want to be able to go WOT without alerting every cop within a 10 mile radius. Can't have fun with the police on your ***
</font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">I'll bet you $50 its quieter. <img border="0" title="" alt="[Wink]" src="gr_images/icons/wink.gif" />

JP98SS

When do you want to pay me Terry? We need to pick a location as well. It is too damn far for me to drive out to your place. I'll spend the $50 in gas.

BLUEBYU

iTrader: (1)

Highly recommend Hooker's catback. High flow and not much hp/tq loss. My brother's last dyno showed a 3 hp/tq drop through the catback. Very affordable, so much that I installed it with Jet Hot's coating to match everything else. Very throaty sound at cruise and does have a distinct roar at WOT. Oh yeah, awesome numbers... <img border="0" title="" alt="[Eek!]" src="gr_eek2.gif" />

Terry Burger

iTrader: (4)

How about Thurs @ Irwindale? We just need someone with a DB gun to come out. <img border="0" title="" alt="[Wink]" src="gr_images/icons/wink.gif" />

myfasstoy

</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif"> We are only running 11.3:1 compression </font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">JP98SS, Are you getting any KR or detonation with that CR and 91 octane? How's your idle, is it choppy with that LSA? I was told by my builder not to go over 10.5-10.6 CR for CA gas. (ARE 436)

Thanks

Terry Burger

iTrader: (4)

I can chime in with a little info here. I run ~12.0:1 CR and with the 229v2.1 (114ls) cam I was getting a bit of ping at part throttle on 91. With the new cam (242/236 110ls) it seems to have gone away. To be safe I'd stick with 10.5-11.0 CR, and make sure you get the car dyno tuned.

Linear Velocity

iTrader: (1)

</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by Terry Burger:
<strong> How about Thurs @ Irwindale? We just need someone with a DB gun to come out. <img border="0" title="" alt="[Wink]" src="gr_images/icons/wink.gif" /> </strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">I got a gun Terry <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" /> and also Terry of course you are going to lose less thru a full exhaust than JP, he's making almost 60 more rwhp than you <img border="0" title="" alt="[Wink]" src="gr_images/icons/wink.gif" />

Speeds8erM-1

iTrader: (28)

<img border="0" title="" alt="[Eek!]" src="gr_eek2.gif" /> <img border="0" title="" alt="[Eek!]" src="gr_eek2.gif" /> <img border="0" title="" alt="[Eek!]" src="gr_eek2.gif" /> <img border="0" title="" alt="[Eek!]" src="gr_eek2.gif" />

Pro Stock John

iTrader: (34)

Nice, what was your AF?