Headers Worth The Money
- Thread starter shb5007
- Start date
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Can't answer your question for sure, but I'm in the same boat. I have some Mac LT's on the way and a Lethal O/R X. I have the mods in my sig and my plan now is to install the LT's and then add a 2.76 upper. I researched and people say you drop 1-2 #s of boost by adding LT's. Making more power w less boost is good, so I'd say its a good idea. I have already done the bolt ons and supporting mods, so now its time for the harder and a little more expensive mods. I can do all the work myself, so that hepls a lot. If you have to have a shop do it, its a different story. Best of luck :burnout:
Can't answer your question for sure, but I'm in the same boat. I have some Mac LT's on the way and a Lethal O/R X. I have the mods in my sig and my plan now is to install the LT's and then add a 2.76 upper. I researched and people say you drop 1-2 #s of boost by adding LT's. Making more power w less boost is good, so I'd say its a good idea. I have already done the bolt ons and supporting mods, so now its time for the harder and a little more expensive mods. I can do all the work myself, so that hepls a lot. If you have to have a shop do it, its a different story. Best of luck :burnout:
^ same thing as above. from what i've gathered you'll pick up around 15-20hp on an eaton car, but almost 30 ft lbs. correct me if i'm wrong guys. then ofcourse if you have a ts and stock manifold you'll gain more but that's not the case for you or me. I'll be trying out the pacesetter ceramic's and x pipe, for under 600 shipped to my door with gaskets you cant beat it.
The tuners I have talked to, both stated they have only seen power increase above 600hp. Lower than that they have actually seen decreases in hp/tq. This is not gospel but what they have experienced with the 03/04 cobra's they have put headers on and tuned. Take it with a grain of salt cause every car is different.
As far as boost yes when i went from stock mani's to BBK 1 5/8 LTs and BBK o/r X I dropped about 2 lbs of boost with my 2.9 whipple, so my tuner exchanged the stock 2.9Whipple 3.5" upper pulley to a 3.25" to bring the boost back up the 2 lbs I decreased.
Before headers o/r X I had 93 octane tune at 587hp around 20.5 to 21lbs of boost. After the headers o/r X and 100 octane tune I went to 688hp around 20.5 lbs of boost.
Hope this helps. Again take what I said the tuners I talked to stated with a grain of salt your car/setup might show different outcomes. :beer:
As far as boost yes when i went from stock mani's to BBK 1 5/8 LTs and BBK o/r X I dropped about 2 lbs of boost with my 2.9 whipple, so my tuner exchanged the stock 2.9Whipple 3.5" upper pulley to a 3.25" to bring the boost back up the 2 lbs I decreased.
Before headers o/r X I had 93 octane tune at 587hp around 20.5 to 21lbs of boost. After the headers o/r X and 100 octane tune I went to 688hp around 20.5 lbs of boost.
Hope this helps. Again take what I said the tuners I talked to stated with a grain of salt your car/setup might show different outcomes. :beer:
if you plan on going twin screw later on i say go for it for sure just to prep for the future.
I cracked the 600 mark with 17lbs of boost and stock manifolds with a 2.3 whipple. Stock manifolds flow well for what it is. My vote is keep the stock manifolds until you decide to really move up in power.
headers 100% help they don't show a peek number that the internet likes to talk about the area under the curve is a big gain.
If they lose boost your moving more air, more air= more fuel= more power.
Cost is not high if you install them yourself.
If they lose boost your moving more air, more air= more fuel= more power.
Cost is not high if you install them yourself.
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Headers FTW
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Sent from my DROID BIONIC using Tapatalk 2
moonltgold
New Member
Only if you are going twin screw.
Worth it just for the sound factor alone... I have a catted-x with my LT which I think is holding back my power quite a lot.
My Pre-header #s were 598/573 on an iced down hero run to try and break 600.. New numbers below on a hot summer day not a bunch of cool down. Big power increase under the curve.. Wasn't just headers that got me there, since I also did my meth tune at the same time, but I'd say I probably picked up close to 50whp + 60 ftlbs with only those two modifications.
My Pre-header #s were 598/573 on an iced down hero run to try and break 600.. New numbers below on a hot summer day not a bunch of cool down. Big power increase under the curve.. Wasn't just headers that got me there, since I also did my meth tune at the same time, but I'd say I probably picked up close to 50whp + 60 ftlbs with only those two modifications.
the stock manifolds are very good, even with a TS. my car cracked over 700 with them. high flow cats as well. it makes 600ft lbs at the wheel by 2800rpms
Like Stated above. The more air your freeing up the better. Yes Stock Mani's will go far and you can make more boost with them, but when your making the same power on 17lbs and headers vs 19lbs and manifolds...I mean really?
I lost like 4lbs of boost when I tossed my Mani and stock H away, but car is faster...even with less boost.
I lost like 4lbs of boost when I tossed my Mani and stock H away, but car is faster...even with less boost.
Actually I said 700+ lol
It's just not worth it to me for a street car that i prefer stealthy with the exhaust note. Leave your factory manifolds, work on your fuel system and I say get rid of your gasoline tune....and find the magic pill that is E85 :rockon:
I think that your a little off in your HP expectations. I don't know of any twin screw cobra that made 600hp at 17lbs of boost and then picked up anywhere close to 50hp with a header and x pipe swap. I hit 642 at 21lbs of boost and torco with long tubes. This was with a 2.3 whipple.
By the way, my car was dynoed with a ported eaton both before and after the headers were installed. It gained 19 hp and 28 ft lbs. So whoever said that it gained 20 hp and 30 ft lbs hit the nail right on the head. Keep in mind that it was 70 degrees when it was dynoed without headers and 80 plus when it was dynoed with headers, though. I lost only about 1-2psi of boost after installing them, and yes, the car still made more power. That's a win-win to me. But, is it worth the cost? That's up to you. I also like the sound, so for me it's worth it.
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