How much power...realistically will I get from M/S +
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How much power...realistically will I get from M/S +
How much power...realistically will I get from airflow meter removed, decent filter, hks extractors and full exhaust? I currenlt have a bog standard 1990 so 115 hp~ (when it was new) not sure what they are atw.
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Re: How much power...realistically will I get from M/S +
Not much... My butt dyno noticed a gain in power when I replaced my leaking exhaust with a non-leaking exhaust. You should notice something thoughWickmyster wrote:How much power...realistically will I get from airflow meter removed, decent filter, hks extractors and full exhaust? I currenlt have a bog standard 1990 so 115 hp~ (when it was new) not sure what they are atw.
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i wouldnt bother going MS if your staying with your stock inlet plenum. if you were adding cams and ITBs then yes.
get your exhaust done and a lightweight flywheel and then do a clocking crystal mod for a bit more HP. the mx5 B6 is a dog of an engine really. it just doest respond to mods like a honda for example.
get your exhaust done and a lightweight flywheel and then do a clocking crystal mod for a bit more HP. the mx5 B6 is a dog of an engine really. it just doest respond to mods like a honda for example.
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warrior wrote:Have a good think about what you want as you can spend a lot on these cars with very little gains. If you are thinking of maybe one day going turbo or supercharged then I strongly recommend waiting.
I didnt and it cost me money along the way.
So true. I've done so many halfway mods... Would've been better holding back and going all the way rather than increments
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Power increase
Having dynoed over 20 MX5's on Megasquirts I can give you a definitive answer
On a stock engine, with a decent exhaust and pod filter, (stock exhaust manifold is fine up to 230hp)
you will go from a stock 95hp ATW to on average 105 hp ATW
which is about a 12hp flywheel increase.
Not amazing but definitely noticeable, especially over 5500 rpm.
Once you modify the engine, the power increases will be alot more.
You can also alter the rev limit of the engine, to give a broader power band,
On a stock engine, with a decent exhaust and pod filter, (stock exhaust manifold is fine up to 230hp)
you will go from a stock 95hp ATW to on average 105 hp ATW
which is about a 12hp flywheel increase.
Not amazing but definitely noticeable, especially over 5500 rpm.
Once you modify the engine, the power increases will be alot more.
You can also alter the rev limit of the engine, to give a broader power band,
Sticking feathers up your butt does not make you a chicken
Re: Power increase
Any ideas about what sort of gains to be had on an 1800 NB with extractors, standard mid pipe, larger diameter rear section/muffler/exhaust, cold side filter?Teamjelly wrote:Having dynoed over 20 MX5's on Megasquirts I can give you a definitive answer
On a stock engine, with a decent exhaust and pod filter, (stock exhaust manifold is fine up to 230hp)
you will go from a stock 95hp ATW to on average 105 hp ATW
which is about a 12hp flywheel increase.
Not amazing but definitely noticeable, especially over 5500 rpm.
Once you modify the engine, the power increases will be alot more.
You can also alter the rev limit of the engine, to give a broader power band,
Are there fuel savings to be made as well? (i.e. leaner fuelling than standard)
Ex: 1991 BRG NA6, 1998 White RS, 1997 Wine Merlot M Edition
I didn't think that was possible with the NB? My memory is a bit hazy but I thought it was something to do with the move to a CAS?
I did do it on my NA and it felt a bit meatier in the mid range
edit- Ahh I see you have an adjustable cam gear- Mind if I ask how much that cost to buy and install etc?
I did do it on my NA and it felt a bit meatier in the mid range
edit- Ahh I see you have an adjustable cam gear- Mind if I ask how much that cost to buy and install etc?
Ex: 1991 BRG NA6, 1998 White RS, 1997 Wine Merlot M Edition
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You just need a adjustable timing encoder wheel which is behind the crank pulley
Here's the one I got
http://5xracing.com/i-6330020-5x-racing ... ta-v2.html
Definitely worth it for $40
Factory timing is set to 10 degrees
Mines at 14-15
Here's the one I got
http://5xracing.com/i-6330020-5x-racing ... ta-v2.html
Definitely worth it for $40
Factory timing is set to 10 degrees
Mines at 14-15
get your exhaust done and a lightweight flywheel and then do a clocking crystal mod for a bit more HP. the mx5 B6 is a dog of an engine really. it just doest respond to mods like a honda for example.[/quote]
pretty much what i have done with mine,can't give you power figures but sure as hell feels faster .
Still maintain the light flywheel is the best thing you can do without going as far as F/I.
Really livens the little beasts up ! FACT !!
Couple of months ago had a wanked up honda Civic Vtec B16A give up chasing me one day,Even he was impressed,as much as i was when he caught up.
And flywheel switch does need the ECU tweaking from Don,You WILL hit the limiter in second NO problems.
pretty much what i have done with mine,can't give you power figures but sure as hell feels faster .
Still maintain the light flywheel is the best thing you can do without going as far as F/I.
Really livens the little beasts up ! FACT !!
Couple of months ago had a wanked up honda Civic Vtec B16A give up chasing me one day,Even he was impressed,as much as i was when he caught up.
And flywheel switch does need the ECU tweaking from Don,You WILL hit the limiter in second NO problems.
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There's something wrong with that civic if a B16A is losing to your MX5.. My civic had intake, header, exhaust and a mild tune and made 141wkw (On the same dyno it made 101 factory).
Agree with the flywheel, will help revs for sure, but here's what I would do. Forget ALL mods here. MS it, learn to tune it, turbo it, profit
Agree with the flywheel, will help revs for sure, but here's what I would do. Forget ALL mods here. MS it, learn to tune it, turbo it, profit
Surprised the hell out of me too,i could hear he was giving it shit,and he was falling behind,but hey only a one off on the day.
You would be amazed how hard the B6 pulls with a light flywheel,from a 9kg factory to a 3.5 kg TODA and no rev limiter.
Wouldn't want to do it every day,motor would eventually give out and cry enough.
I have got a good quality JDM short shift kit as well,No shagging around between gears.
On the turbo side,each to there own
You would be amazed how hard the B6 pulls with a light flywheel,from a 9kg factory to a 3.5 kg TODA and no rev limiter.
Wouldn't want to do it every day,motor would eventually give out and cry enough.
I have got a good quality JDM short shift kit as well,No shagging around between gears.
On the turbo side,each to there own
Did you install yourself or get the shop to do it? (I don't have a timing light)- Can you remember how long it took to install/labour costs?Kieran wrote:You just need a adjustable timing encoder wheel which is behind the crank pulley
Here's the one I got
http://5xracing.com/i-6330020-5x-racing ... ta-v2.html
Definitely worth it for $40
Factory timing is set to 10 degrees
Mines at 14-15
Ex: 1991 BRG NA6, 1998 White RS, 1997 Wine Merlot M Edition
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I installed it myself it has detailed instructions and if I can do it anyone canTimmo wrote:Did you install yourself or get the shop to do it? (I don't have a timing light)- Can you remember how long it took to install/labour costs?Kieran wrote:You just need a adjustable timing encoder wheel which is behind the crank pulley
Here's the one I got
http://5xracing.com/i-6330020-5x-racing ... ta-v2.html
Definitely worth it for $40
Factory timing is set to 10 degrees
Mines at 14-15
It took me an hour and I only ran into one problem that the car wouldn't start afterwards but soon fixed this as I had knocked the sensor slightly out of place and I didn't use a timing light I just eyeballed it
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On the ecu there's a silver chip right in the corner marked 4.00 all you do is replace it with a 4.4 chip. (actually I think you can only get a 4.39)Basically this chip is the clock which everything is referenced to so replacing it with a ten percent higher one you raise your rev limit 10% and lean your mixture 10% and advance timing by 4 to 6 degrees.
The na 1800's have an 8.0mhz chip so you change it to about 8.8.
You can't chip an Nb as it screws up the obd functions
The na 1800's have an 8.0mhz chip so you change it to about 8.8.
You can't chip an Nb as it screws up the obd functions
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So...how do you gain more horsepower? I thought peak power was 6700 - 6800rpm so reving it higher just puts more stress on engine componants?SLYDIT wrote:On the ecu there's a silver chip right in the corner marked 4.00 all you do is replace it with a 4.4 chip. (actually I think you can only get a 4.39)Basically this chip is the clock which everything is referenced to so replacing it with a ten percent higher one you raise your rev limit 10% and lean your mixture 10% and advance timing by 4 to 6 degrees.
The na 1800's have an 8.0mhz chip so you change it to about 8.8.
You can't chip an Nb as it screws up the obd functions
Advancing the timing helps, but you can do that without changing the chip.
Just trying to understand more...
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