Realistic Gains
- Thread starter JMDPRO5
- Start date
Actually, the person that has gotten the most NA power is chdesign. I think he was up to 130 at the wheels. But he had the HC pistons and his car is the 1.8 and not the 2.0. You WILL NOT see those gains without the HC pistons. There is no arguing about that. You CAN NOT just add up companies claimed gains. It doesn't work.
DooMer_MP3
Member
I want to believe there is some hidden NA power in these engines, but lets face it people, these aren't Hondas. I've been on these message boards since September 2001 and I've seen so many people hoping for 10WHP here and 20WHP there, but it just hasn't happened. If somebody could figure out how to add 50whp to this car NA for less than 2 grand I'd be all over it. But I don't think its gonna happen so I am saving for a turbo kit.
Chris
Chris
All the power in small motors is in the head. Honda does extensive R&D on the head and valve train, hence the vtec. Mazda is known for the wankle, that's what they are famous for. When people think of Mazda, they picture the rotary engine. Mazda just isn't know for it's piston engines. That's the gods honest truth to it. I'm not saying Mazda's piston engines are crap, they just aren't as developed as Honda's.
tonpow,
to answer # 3 for you
it goes back to closed loop at WOT for catalytic converter eff.
second the properly designed headers will allow a good low end response thru out the rpm range and good high end
20 hp is close to where he will be
contact burns stainless for info
to answer # 3 for you
it goes back to closed loop at WOT for catalytic converter eff.
second the properly designed headers will allow a good low end response thru out the rpm range and good high end
20 hp is close to where he will be
contact burns stainless for info
Look guys, I'm not attacking you and saying your NA mods got you no power. A headder will give you some good power with this car, but just not a whole lot to brag about. The sad thing is that most headders are very poorly designed. Most aren't even researched at all. For normal economy cars such as the Protege, they usually just build a set of headders that will fit the car and copy previous design from other cars. That's why the cost os so low. Look at headders for more expensive cars such as the S2000. A good headder will run at least $1000. That's the normal going rate for a headder that will improve low and top rpm ranges. There is lots of R&D that goes into them and that's why they charge much more. They might take 6 months to a year building several different ones and trying them out on a dyno to see what works the best. This just isn't so for most headders built for cars such as the civic or protege or any other car that's meant for economy.
the one thing you need to remember is that the engine has a baseline hp level. whatever it may be.
forget the 130 hp the factory claims at the fly wheel
when bench tested they have a certain power level designed into them
after all the bull emisions sh*t and restrictive exhaust etc. driveline etc. there is another figure of hp output
all your doing with the header and other mods is unleashing horse power that is already designed into the cam profile, head etc.
now your right about the r & d of other manifolds but in this case ( bieng that i have worked on them a while) there is some gains that are supstantial when combined with a cat back exhaust.
again nothing to brag about.
forget the 130 hp the factory claims at the fly wheel
when bench tested they have a certain power level designed into them
after all the bull emisions sh*t and restrictive exhaust etc. driveline etc. there is another figure of hp output
all your doing with the header and other mods is unleashing horse power that is already designed into the cam profile, head etc.
now your right about the r & d of other manifolds but in this case ( bieng that i have worked on them a while) there is some gains that are supstantial when combined with a cat back exhaust.
again nothing to brag about.
I've seen stock dyno plots of 97hp I think. So that is an overall gain of 13hp with the intake and catback. Looks like someone was right. I'm sure the catback had claims of 10hp at the wheels. And I'm sure the intake stated claims of 7 to 10 at the wheels. Looks like they are way off huh.
