Header Dyno Results
#1
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Header Dyno Results
Pretty disappointing. I went back to the dyno today to see what gains, if any, the addition of my Evosport shorty headers would make to my otherwise stock car. The headers have been on the car for over a month now.
Using the same dyno, and all else being identical to my prior dyno runs other than the intake air temperature being 4 degrees warmer outside today, I got a peak gain of only 8HP at 5,300 RPM, while peak torque actually declined by 4 ft. lbs. Peak torque remained at 3,000 RPM. My car is now producing 434 RWHP and 491 ft. lbs. of torque, so I am still very pleased overall.
Perhaps others have gotten better results with just the addition of shorty headers, but I'm not one of them. I seriously doubt if shorty headers alone will actually bring anything close to the 20 - 30 RWHP I've seen claimed here. This one ranks as my second worst performance "enhancement" in terms of cost per each HP gained, the worst being on a previously owned car.
What's my next step in the quest - TB or pulley?
Using the same dyno, and all else being identical to my prior dyno runs other than the intake air temperature being 4 degrees warmer outside today, I got a peak gain of only 8HP at 5,300 RPM, while peak torque actually declined by 4 ft. lbs. Peak torque remained at 3,000 RPM. My car is now producing 434 RWHP and 491 ft. lbs. of torque, so I am still very pleased overall.
Perhaps others have gotten better results with just the addition of shorty headers, but I'm not one of them. I seriously doubt if shorty headers alone will actually bring anything close to the 20 - 30 RWHP I've seen claimed here. This one ranks as my second worst performance "enhancement" in terms of cost per each HP gained, the worst being on a previously owned car.
What's my next step in the quest - TB or pulley?
#2
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Bentley Flying Spur, CL550
Pulley next for sure.
Depending on where you live, you should get some minor cooling mods(spacers, new pump, -10* mod, and 160* stat). All inexpensive and effective as a unit.
Depending on where you live, you should get some minor cooling mods(spacers, new pump, -10* mod, and 160* stat). All inexpensive and effective as a unit.
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06 EuroElites E55
Pretty disappointing. I went back to the dyno today to see what gains, if any, the addition of my Evosport shorty headers would make to my otherwise stock car. The headers have been on the car for over a month now.
Using the same dyno, and all else being identical to my prior dyno runs other than the intake air temperature being 4 degrees warmer outside today, I got a peak gain of only 8HP at 5,300 RPM, while peak torque actually declined by 4 ft. lbs. Peak torque remained at 3,000 RPM. My car is now producing 434 RWHP and 491 ft. lbs. of torque, so I am still very pleased overall.
Perhaps others have gotten better results with just the addition of shorty headers, but I'm not one of them. I seriously doubt if shorty headers alone will actually bring anything close to the 20 - 30 RWHP I've seen claimed here. This one ranks as my second worst performance "enhancement" in terms of cost per each HP gained, the worst being on a previously owned car.
What's my next step in the quest - TB or pulley?
Using the same dyno, and all else being identical to my prior dyno runs other than the intake air temperature being 4 degrees warmer outside today, I got a peak gain of only 8HP at 5,300 RPM, while peak torque actually declined by 4 ft. lbs. Peak torque remained at 3,000 RPM. My car is now producing 434 RWHP and 491 ft. lbs. of torque, so I am still very pleased overall.
Perhaps others have gotten better results with just the addition of shorty headers, but I'm not one of them. I seriously doubt if shorty headers alone will actually bring anything close to the 20 - 30 RWHP I've seen claimed here. This one ranks as my second worst performance "enhancement" in terms of cost per each HP gained, the worst being on a previously owned car.
What's my next step in the quest - TB or pulley?
the good news is your car is/was strong from the start. my car dynoed 401rwhp stock you have a 30hp head start.lol
#6
I dyno'd a set of shorties on my stock car and saw no increase as well. Not too surprising though as headers don't usually see the gains on forced induction cars as you would see on naturally aspirated cars.
#7
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06 EuroElites E55
headers IMO shouldnt be added first. there is no need for them untill you do TB and pully. you will see gains after that for sure but I still dont belive the crazy number people quote.
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#8
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Yeah, and I learned my butt dyno was wrong. After the header install, it felt like low end torque (below 2,500 RPM) was down. In fact, the dyno shows decent gains in low end torque with the addition of the headers; e.g. +11 ft. lbs. at 2,500 RPM. The upper RPM range feels like the engine is less restricted, but the power gains measured didn't seem commensurate with the feel of the butt dyno. Either way, the car seems more eager to accelerate with the addition of the headers; they just didn't create gains as large as I had been led to believe I might obtain. Definitely dyno your car and share your experience.
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06 EuroElites E55
Yeah, and I learned my butt dyno was wrong. After the header install, it felt like low end torque (below 2,500 RPM) was down. In fact, the dyno shows decent gains in low end torque with the addition of the headers; e.g. +11 ft. lbs. at 2,500 RPM. The upper RPM range feels like the engine is less restricted, but the power gains measured didn't seem commensurate with the feel of the butt dyno. Either way, the car seems more eager to accelerate with the addition of the headers; they just didn't create gains as large as I had been led to believe I might obtain. Definitely dyno your car and share your experience.
#11
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S600TT, R350
On the car with pulley and tune, the headers make a nice 20-25RWHP gain. On a stock car, stock manifolds are OK.
I will going through of these bolton again on Jangies E55, will be able to see all of the gains, part by part.
I will going through of these bolton again on Jangies E55, will be able to see all of the gains, part by part.
#13
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#14
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Yeah, and I learned my butt dyno was wrong. After the header install, it felt like low end torque (below 2,500 RPM) was down. In fact, the dyno shows decent gains in low end torque with the addition of the headers; e.g. +11 ft. lbs. at 2,500 RPM. The upper RPM range feels like the engine is less restricted, but the power gains measured didn't seem commensurate with the feel of the butt dyno. Either way, the car seems more eager to accelerate with the addition of the headers; they just didn't create gains as large as I had been led to believe I might obtain. Definitely dyno your car and share your experience.
I got the idea that, other things equal, benefit comes even from larger pipes' dia.
therefore VRP's that I think have a 1.75" diameter should do better ..
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2004 E55 AMG and 2003 C320 4Matic Miss my 993 Turbo above!!
Pretty disappointing. I went back to the dyno today to see what gains, if any, the addition of my Evosport shorty headers would make to my otherwise stock car. The headers have been on the car for over a month now.
Using the same dyno, and all else being identical to my prior dyno runs other than the intake air temperature being 4 degrees warmer outside today, I got a peak gain of only 8HP at 5,300 RPM, while peak torque actually declined by 4 ft. lbs. Peak torque remained at 3,000 RPM. My car is now producing 434 RWHP and 491 ft. lbs. of torque, so I am still very pleased overall.
Perhaps others have gotten better results with just the addition of shorty headers, but I'm not one of them. I seriously doubt if shorty headers alone will actually bring anything close to the 20 - 30 RWHP I've seen claimed here. This one ranks as my second worst performance "enhancement" in terms of cost per each HP gained, the worst being on a previously owned car.
What's my next step in the quest - TB or pulley?
Using the same dyno, and all else being identical to my prior dyno runs other than the intake air temperature being 4 degrees warmer outside today, I got a peak gain of only 8HP at 5,300 RPM, while peak torque actually declined by 4 ft. lbs. Peak torque remained at 3,000 RPM. My car is now producing 434 RWHP and 491 ft. lbs. of torque, so I am still very pleased overall.
Perhaps others have gotten better results with just the addition of shorty headers, but I'm not one of them. I seriously doubt if shorty headers alone will actually bring anything close to the 20 - 30 RWHP I've seen claimed here. This one ranks as my second worst performance "enhancement" in terms of cost per each HP gained, the worst being on a previously owned car.
What's my next step in the quest - TB or pulley?
#17
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2015 S212
From a $ analysis, you need to keep in mind that the headers should actually come AFTER you modify the intake. In that respect, you have typically already started to approach the diminishing returns. By contrast, look into $2500 for an easy 50 (HP and TQ) with the pulley and ecu.
On a forced induction, why open the back end when the front is tight? You only put in as much air as the screw and other associated backpressures allow. The headers basically come into play at the top end, when the screw is really being more of a restriction than a help. The headers help to drop the localized pressure, and therefore increase the airflow. On a dyno chart, I would look mostly at the HP curve to be more linear, rather than plataeuing out.
EVO Headers are nice. You kind of twisted it by getting them first, but they are still nice. Just add more bol on toys and you will be happy.
On a forced induction, why open the back end when the front is tight? You only put in as much air as the screw and other associated backpressures allow. The headers basically come into play at the top end, when the screw is really being more of a restriction than a help. The headers help to drop the localized pressure, and therefore increase the airflow. On a dyno chart, I would look mostly at the HP curve to be more linear, rather than plataeuing out.
EVO Headers are nice. You kind of twisted it by getting them first, but they are still nice. Just add more bol on toys and you will be happy.
#21
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2015 S212
Do you know the wheel numbers? It would be interesting to see what just shorties really adds to a stock car on the dyno. I'm not so sure that the gains can really be captured that way, but just curious.
#22
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#24
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Russ probably had the popular chip tuning that gives 525 crank HP
.. so, shorties added 10 , or 8 at wheels.
seems correct.