Headers Demystified! HP Gains or Not..
04-23-2008, 10:24 PM
#22
2nd Gear Member
Thread Starter
Join Date: Feb 2008
Location: N/A
Posts: 336
RE: Headers Demystified! HP Gains or Not..
ORIGINAL: lizzyfan
I understand that, what company? Mustangdyno? Dynojet?
ORIGINAL: Blk N Wht GT
It was a Chassis Dyno
ORIGINAL: lizzyfan
What type of dyno?
What type of dyno?
04-23-2008, 10:30 PM
#23
Underboss
Join Date: Jan 2006
Location: Helaware
Posts: 20,273
RE: Headers Demystified! HP Gains or Not..
ORIGINAL: Blk N Wht GT
Ummm.. I guess I have no other information for you. I thought there were 3 main types of dynos, Chassis, Mustang, and Dynojet. Maybe I'm mistaken..
ORIGINAL: lizzyfan
I understand that, what company? Mustangdyno? Dynojet?
ORIGINAL: Blk N Wht GT
It was a Chassis Dyno
ORIGINAL: lizzyfan
What type of dyno?
What type of dyno?
Oh Well
04-23-2008, 10:32 PM
#24
5th Gear Member
Join Date: Aug 2006
Location:
Posts: 4,081
RE: Headers Demystified! HP Gains or Not..
Hmm im not liking the H pipe with the packs from an idle/rev but when you get on it it sounds mean as hell.
Anyways thanks for the comparison. I almost think the sound difference alone is worth it because longtubes just make it sound that much meaner.
Anyways thanks for the comparison. I almost think the sound difference alone is worth it because longtubes just make it sound that much meaner.
04-23-2008, 10:39 PM
#25
6th Gear Member
Join Date: Jan 2004
Location: United States
Posts: 12,575
RE: Headers Demystified! HP Gains or Not..
dynojet, mustang dyno, dyno dynamics?
Do you have a pic of the dyno sheet? I would like to see your a/f ratio etc. What is your tune like? I would have been interested to see what the car would do tuned both before and after as well etc/
Do you have a pic of the dyno sheet? I would like to see your a/f ratio etc. What is your tune like? I would have been interested to see what the car would do tuned both before and after as well etc/
04-24-2008, 07:31 AM
#26
4th Gear Member
Join Date: Aug 2007
Location: Shelbyville, Indiana
Posts: 1,088
RE: Headers Demystified! HP Gains or Not..
My car has a Procharger. I installed BBkLTs and catted-mid pipe. There was very little difference in performance. 385 rwhp/370 rwtq before and 385 rwhp/368 rwtq after. But the runs were months apart on different dynos so the data is somewhat suspect. I was running rich so I had the car re-tuned. The tuner was very conservative so I'm now running 370 rwhp/377 rwtq. But, the horspower and torque curves changed. I gained 15-20 rwhp mid-range and reach peak torque much earlier. It is definitely felt when shifting gears.
I'm not sure where people get the 25-30 rwhp gain for LTs.
I'm not sure where people get the 25-30 rwhp gain for LTs.
04-24-2008, 08:21 AM
#27
Retired MF Moderator
Join Date: Aug 2004
Posts: 14,891
RE: Headers Demystified! HP Gains or Not..
ORIGINAL: Eagle2000GT
My car has a Procharger. I installed BBkLTs and catted-mid pipe. There was very little difference in performance. 385 rwhp/370 rwtq before and 385 rwhp/368 rwtq after. But the runs were months apart on different dynos so the data is somewhat suspect. I was running rich so I had the car re-tuned. The tuner was very conservative so I'm now running 370 rwhp/377 rwtq. But, the horspower and torque curves changed. I gained 15-20 rwhp mid-range and reach peak torque much earlier. It is definitely felt when shifting gears.
I'm not sure where people get the 25-30 rwhp gain for LTs.
My car has a Procharger. I installed BBkLTs and catted-mid pipe. There was very little difference in performance. 385 rwhp/370 rwtq before and 385 rwhp/368 rwtq after. But the runs were months apart on different dynos so the data is somewhat suspect. I was running rich so I had the car re-tuned. The tuner was very conservative so I'm now running 370 rwhp/377 rwtq. But, the horspower and torque curves changed. I gained 15-20 rwhp mid-range and reach peak torque much earlier. It is definitely felt when shifting gears.
I'm not sure where people get the 25-30 rwhp gain for LTs.
04-24-2008, 09:22 AM
#28
2nd Gear Member
Thread Starter
Join Date: Feb 2008
Location: N/A
Posts: 336
RE: Headers Demystified! HP Gains or Not..
ORIGINAL: Adam03GT
Hmm im not liking the H pipe with the packs from an idle/rev but when you get on it it sounds mean as hell.
Anyways thanks for the comparison. I almost think the sound difference alone is worth it because longtubes just make it sound that much meaner.
Hmm im not liking the H pipe with the packs from an idle/rev but when you get on it it sounds mean as hell.
Anyways thanks for the comparison. I almost think the sound difference alone is worth it because longtubes just make it sound that much meaner.
04-24-2008, 09:26 AM
#29
2nd Gear Member
Thread Starter
Join Date: Feb 2008
Location: N/A
Posts: 336
RE: Headers Demystified! HP Gains or Not..
ORIGINAL: 2000GT4.6
dynojet, mustang dyno, dyno dynamics?
Do you have a pic of the dyno sheet? I would like to see your a/f ratio etc. What is your tune like? I would have been interested to see what the car would do tuned both before and after as well etc/
dynojet, mustang dyno, dyno dynamics?
Do you have a pic of the dyno sheet? I would like to see your a/f ratio etc. What is your tune like? I would have been interested to see what the car would do tuned both before and after as well etc/
My sct xcal3 tuner is with the UPS guy right now somewhere in transit to my house. I will post up numbers after I have the tune on.
04-24-2008, 09:31 AM
#30
2nd Gear Member
Thread Starter
Join Date: Feb 2008
Location: N/A
Posts: 336
RE: Headers Demystified! HP Gains or Not..
ORIGINAL: Eagle2000GT
My car has a Procharger. I installed BBk LTs and catted-mid pipe. There was very little difference in performance. 385 rwhp/370 rwtq before and 385 rwhp/368 rwtq after. But the runs were months apart on different dynos so the data is somewhat suspect. I was running rich so I had the car re-tuned. The tuner was very conservative so I'm now running 370 rwhp/377 rwtq. But, the horspower and torque curves changed. I gained 15-20 rwhp mid-range and reach peak torque much earlier. It is definitely felt when shifting gears.
I'm not sure where people get the 25-30 rwhp gain for LTs.
My car has a Procharger. I installed BBk LTs and catted-mid pipe. There was very little difference in performance. 385 rwhp/370 rwtq before and 385 rwhp/368 rwtq after. But the runs were months apart on different dynos so the data is somewhat suspect. I was running rich so I had the car re-tuned. The tuner was very conservative so I'm now running 370 rwhp/377 rwtq. But, the horspower and torque curves changed. I gained 15-20 rwhp mid-range and reach peak torque much earlier. It is definitely felt when shifting gears.
I'm not sure where people get the 25-30 rwhp gain for LTs.