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Old 05-15-2018, 07:51 AM   #15
Joe's_cool_1le

 
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Quote:
Originally Posted by Drsagacity View Post
Geesh. This is bringing back bad memories of one of the adventures I had with a Vette.

The combination cam, LT headers and no cats = too loud and momma didn’t even want to drive in the car.
#samelife
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Old 05-15-2018, 08:10 AM   #16
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Quote:
Originally Posted by Joe's_cool_1le View Post
#samelife
Looks like I will be going with a smooth idle cam after all.

I thought I had decided on rough idle if I could get by without headers and keeping my cats.

I was hopeful since Laynlo is running over 700rwhp with stock exhaust.
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Old 05-15-2018, 08:14 AM   #17
Joe's_cool_1le

 
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Quote:
Originally Posted by Drsagacity View Post
Looks like I will be going with a smooth idle cam after all.

I thought I had decided on rough idle if I could get by without headers and keeping my cats.

I was hopeful since Laynlo is running over 700rwhp with stock exhaust.
LOL... Mine can make some people sick if I'm stopped for too long. Could rock some to sleep though.
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Old 05-15-2018, 08:23 AM   #18
Atomic Ed

 
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Quote:
Originally Posted by Drsagacity View Post
Geesh. This is bringing back bad memories of one of the adventures I had with a Vette.

The combination cam, LT headers and no cats = too loud and momma didn’t even want to drive in the car.
Been there and done that several times in the past 40 yrs. I've learned to ask myself "what are my goals with this car?" This time I'm trying to put together a balanced car with great handling, some comfort, and enough power to keep me smiling. While I may take it to the drag strip or road course, it's primary purpose is neither of these.

650+ rwhp seems to be a sweet spot for me where I can take a comfortable road trip without getting worn out by the exhaust system and still terrorize the locals.
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Old 05-15-2018, 08:43 AM   #19
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Originally Posted by Atomic Ed View Post
Been there and done that several times in the past 40 yrs. I've learned to ask myself "what are my goals with this car?" This time I'm trying to put together a balanced car with great handling, some comfort, and enough power to keep me smiling. While I may take it to the drag strip or road course, it's primary purpose is neither of these.

650+ rwhp seems to be a sweet spot for me where I can take a comfortable road trip without getting worn out by the exhaust system and still terrorize the locals.
That’s where I am also. I may occasionally take this to the drag strip, but I am seeing the 650whp target being achievable without getting into the motor...just adding fuel and e85 with another couple pounds of boost. Hopefully that will be done in the next 3-4 weeks.

I am thinking I like the smooth idle cam and pistons so that it makes for a stronger platform to make the power worry free...but to be worry free seems like I will also cross the line to loud! ��
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Old 05-15-2018, 09:07 AM   #20
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You have to look at it this way, the factory exhaust was optimized for a Naturally aspirated engine.

Add a supercharger and add 60-70% more air in to the engine, then the pressure in the exhaust system starts to rise.

This back pressure and heat backs up into the combustion chamber causing unwanted knock and restriction that limits power.

It is a fact that the more air you can get into and out of an engine the more fuel you can burn and the more power you can make.

There will always be Hurdles in making more power, The simplest to solve is improving Air flow in and out.

Ted.
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Old 05-15-2018, 09:22 AM   #21
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Quote:
Originally Posted by JANNETTYRACING View Post
You have to look at it this way, the factory exhaust was optimized for a Naturally aspirated engine.

Add a supercharger and add 60-70% more air in to the engine, then the pressure in the exhaust system starts to rise.

This back pressure and heat backs up into the combustion chamber causing unwanted knock and restriction that limits power.

It is a fact that the more air you can get into and out of an engine the more fuel you can burn and the more power you can make.

There will always be Hurdles in making more power, The simplest to solve is improving Air flow in and out.

Ted.
Ted,
at what point would you recommend upgrading the headers?


I remember you had a before and after dyno thread for all the bolt on. What kind of gains and benefits would long tubes get on a FI 6th gen ?
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Old 05-15-2018, 09:40 AM   #22
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Ted,
at what point would you recommend upgrading the headers?


I remember you had a before and after dyno thread for all the bolt on. What kind of gains and benefits would long tubes get on a FI 6th gen ?
My recommendation is add headers before a supercharger.

Gains vary based on set up, Plus Dyno numbers don't always tell the whole story.

A lot changes when you are running an 1/8 mile or more at full throttle.

We need to exhaust the heat energy made from all that extra air and fuel we are burning in the combustion chamber.

Ted.
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Old 05-15-2018, 09:40 AM   #23
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One thing I didn't see was adding a 170* thermostat and adjusting the fans. Brought my street temps down about 20*.
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Old 05-15-2018, 09:42 AM   #24
JANNETTYRACING

 
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One thing I didn't see was adding a 170* thermostat and adjusting the fans. Brought my street temps down about 20*.
That is a whole other subject but certainly worthy of discussion.

Ted.
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Old 05-15-2018, 09:56 AM   #25
Atomic Ed

 
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That is a whole other subject but certainly worthy of discussion.

Ted.
Certainly this topic has been settled by now, hasn't it?
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Old 05-15-2018, 10:50 AM   #26
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Back to exhaust I have my secondary cats cut out and the CA Performance test pipes going to the stock NPP muffler to quiet it down, I believe that dropped my boost by about 1psi when I got it tuned. I'm at 600whp, when I want more power one day I will definitely buy headers.
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Old 05-15-2018, 11:27 AM   #27
asthmamax11
 
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Quote:
Originally Posted by JANNETTYRACING View Post
My recommendation is add headers before a supercharger.

Gains vary based on set up, Plus Dyno numbers don't always tell the whole story.

A lot changes when you are running an 1/8 mile or more at full throttle.

We need to exhaust the heat energy made from all that extra air and fuel we are burning in the combustion chamber.

Ted.
Another tuner told me that also. Headers help get the heat out of the engine bay. Consistency is a big deal with PD blower.
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16 1SS M6 White
Magnuson 2.3 Heartbeat
Roto Fab
Solo Performance Cat deletes and Axleback
Hurst short shifter
#'s coming soon

Riaction coilovers
1LE sway bars
BMR mm
BMR chassis brace

Flow one 19" wheels wrapped in Mickey Thompsons


02 Z28 M6 35th anniversary
80k miles
T-tops
Leather
Bolt ons
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Old 05-15-2018, 11:48 AM   #28
Drsagacity

 
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Sounds settled. Do we need 2in headers? What’s the best option?
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