MMS 388 Dyno Results
#21
TECH Regular
Join Date: Jan 2002
Location: Tulsa , Oklahoma
Posts: 444
Likes: 0
Received 0 Likes
on
0 Posts
![Default](https://ls1tech.com/forums/images/icons/icon1.gif)
</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" />
<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" />
#22
Moderator
iTrader: (10)
![Default](https://ls1tech.com/forums/images/icons/icon1.gif)
</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!
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!
#24
8 Second Club
iTrader: (11)
Join Date: Feb 2002
Location: (760) Phelan Ca.
Posts: 757
Likes: 0
Received 0 Likes
on
0 Posts
![](https://ls1tech.com/forums/images/ranks/ls1tech20year.png)
![Default](https://ls1tech.com/forums/images/icons/icon1.gif)
</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>
<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>
#26
TECH Apprentice
Thread Starter
Join Date: Feb 2002
Location: Alta Loma, CA
Posts: 358
Likes: 0
Received 0 Likes
on
0 Posts
![Default](https://ls1tech.com/forums/images/icons/icon1.gif)
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" />
#27
9 Second Club
iTrader: (7)
Join Date: Nov 2001
Location: San Bernardino CA
Posts: 508
Likes: 0
Received 0 Likes
on
0 Posts
![](https://ls1tech.com/forums/images/ranks/ls1tech10year.png)
![Default](https://ls1tech.com/forums/images/icons/icon1.gif)
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" />
#28
10 Second Club
iTrader: (14)
Join Date: Mar 2002
Location: Kansas City, KS
Posts: 2,893
Likes: 0
Received 0 Likes
on
0 Posts
![](https://ls1tech.com/forums/images/ranks/ls1tech10year.png)
![Default](https://ls1tech.com/forums/images/icons/icon1.gif)
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>
I hope to get my 382 close to 500rwhp some day....
<small>[ March 02, 2003, 12:53 PM: Message edited by: 383ss ]</small>
#29
TECH Addict
iTrader: (5)
Join Date: Mar 2002
Location: VA
Posts: 2,320
Likes: 0
Received 0 Likes
on
0 Posts
![](https://ls1tech.com/forums/images/ranks/ls1tech10year.png)
![Default](https://ls1tech.com/forums/images/icons/icon1.gif)
</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.
<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.
#30
TECH Apprentice
Thread Starter
Join Date: Feb 2002
Location: Alta Loma, CA
Posts: 358
Likes: 0
Received 0 Likes
on
0 Posts
![Default](https://ls1tech.com/forums/images/icons/icon1.gif)
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" />
#31
Moderator
iTrader: (10)
![Default](https://ls1tech.com/forums/images/icons/icon1.gif)
</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" />
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" />
#32
TECH Veteran
iTrader: (4)
Join Date: Nov 2001
Location: Simi Valley, CA
Posts: 4,712
Likes: 0
Received 0 Likes
on
0 Posts
![](https://ls1tech.com/forums/images/ranks/ls1tech10year.png)
![Default](https://ls1tech.com/forums/images/icons/icon1.gif)
</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" />
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" />
#33
TECH Apprentice
Thread Starter
Join Date: Feb 2002
Location: Alta Loma, CA
Posts: 358
Likes: 0
Received 0 Likes
on
0 Posts
![Default](https://ls1tech.com/forums/images/icons/icon1.gif)
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.
#34
TECH Resident
iTrader: (1)
Join Date: Dec 2001
Location: Overland Park, KS, USA
Posts: 933
Likes: 0
Received 0 Likes
on
0 Posts
![Default](https://ls1tech.com/forums/images/icons/icon1.gif)
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" />
#36
Teching In
Join Date: Oct 2002
Location: Northern Cali
Posts: 24
Likes: 0
Received 0 Likes
on
0 Posts
![Default](https://ls1tech.com/forums/images/icons/icon1.gif)
</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
Thanks
#37
TECH Veteran
iTrader: (4)
Join Date: Nov 2001
Location: Simi Valley, CA
Posts: 4,712
Likes: 0
Received 0 Likes
on
0 Posts
![](https://ls1tech.com/forums/images/ranks/ls1tech10year.png)
![Default](https://ls1tech.com/forums/images/icons/icon1.gif)
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.
#38
TECH Resident
iTrader: (1)
Join Date: Nov 2001
Location: Huntington Beach, Ca
Posts: 813
Likes: 0
Received 0 Likes
on
0 Posts
![Default](https://ls1tech.com/forums/images/icons/icon1.gif)
</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" />
<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" />
#39
TECH Enthusiast
iTrader: (28)
Join Date: Jan 2002
Location: Pensacola Florida
Posts: 581
Likes: 0
Received 0 Likes
on
0 Posts
![](https://ls1tech.com/forums/images/ranks/ls1tech20year.png)
![Default](https://ls1tech.com/forums/images/icons/icon1.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" /> <img border="0" title="" alt="[Eek!]" src="gr_eek2.gif" />