MSpnp doesn't use all the factory switches!!!!oneone
11-09-2007, 11:59 AM
#1
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MSpnp doesn't use all the factory switches!!!!oneone
He's pretty sly about it, but it seems like he's looking for an excuse to knock the product.
I also doubt we'd see 128whp out of a NA 1.8 with $2000 in light headwork on a non-FM dyno.
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Originally Posted by Keith
We're trying to get Hydra to add the ability to use different widebands.
The Hydra CAN be locked up by a password, but the ones sold by FM are not currently set up that way.
The Hydra is fully plug and play. Even the plug and play MS doesn't use all the factory sensors, such as the idle switch.
Support from the Hydra company really doesn't matter - if you live in North America, you'll deal with FM. If you live elsewhere, you'll deal with the distributors. We have no complaints right now.
Here's a 1995 with an aftermarket exhaust and no other modifications. We strapped it to the dyno, tested it, plugged in a Link and tested it again.
http://www.flyinmiata.com/tech/dyno_...ito_101501.pdf
The 1994 engine in Bill's Westfield has a Hydra. The head is refreshed with fresh valves and a bit of unshrouding. The exhaust manifold is stock and the intake is a hot air setup chosen for packaging above all else. It made 128 hp at the wheels with sharp throttle response.
Aftermarket ECUs can definitely help naturally aspirated cars, but they're expensive. Most people stop after the usual intake/header/exhaust modifications due to exhaustion of the pocketbook.
The Hydra CAN be locked up by a password, but the ones sold by FM are not currently set up that way.
The Hydra is fully plug and play. Even the plug and play MS doesn't use all the factory sensors, such as the idle switch.
Support from the Hydra company really doesn't matter - if you live in North America, you'll deal with FM. If you live elsewhere, you'll deal with the distributors. We have no complaints right now.
Here's a 1995 with an aftermarket exhaust and no other modifications. We strapped it to the dyno, tested it, plugged in a Link and tested it again.
http://www.flyinmiata.com/tech/dyno_...ito_101501.pdf
The 1994 engine in Bill's Westfield has a Hydra. The head is refreshed with fresh valves and a bit of unshrouding. The exhaust manifold is stock and the intake is a hot air setup chosen for packaging above all else. It made 128 hp at the wheels with sharp throttle response.
Aftermarket ECUs can definitely help naturally aspirated cars, but they're expensive. Most people stop after the usual intake/header/exhaust modifications due to exhaustion of the pocketbook.
Originally Posted by Keith
The idle switch is very useful in getting the car to idle. My understanding is that the MS can use a variable TPS to determine this, but there isn't one on a 5-speed 1990-93. There are various workarounds, but the easiest solution would be to use the on/off idle switch on the factory sensor. This apparently is not currently workable. The Link and the Hydra both use the factory sensor in this way.
Yes, the Hydra has its own integrated MAP sensor. There's no real benefit to keeping the AFM.
Yes, the Hydra has its own integrated MAP sensor. There's no real benefit to keeping the AFM.
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11-09-2007, 12:12 PM
#5
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there is a tps switch. I thought it was an on/off at full throttle, but apparently its for idle. Either way, both are equally plug n play, and both work just fine. I thought the comment was interested that MSpnp doesn't use every switch in the car, then he goes on about how hydra lets you pull the AFM.
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11-09-2007, 12:44 PM
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When the throttle plate is fully closed, then the "idle" switch is activated. When the throttle plate is fully open, then the "WOT" switch is activated. When the throttle plate is in an intermediate position (neither fully open nor fully closed) then neither switch is activated.
The 1.8 NAs, and those with automatics, have a TPS that contains one switch and a potentiometer. I *think* that said switch indicates the "idle" position, with the "WOT" function being determined off the potentiometer alone.
It's not terribly relevant however as in the NB Mazda decided to do away with the switches altogether and run based on the potentiometer alone.
So if we consider the NB's ECU to be superior to the NA's ECU, then it follows that judging TPS based solely off a potentiometer is superior than using switches to do so. Ergo the MSPNP.
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11-09-2007, 01:48 PM
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He's right. The 90-93 PNP (in stock form) completely ignores TPS. If the user wants, he can upgrade to a linear TPS, which is the BEST solution and is easy to do. I'm trying to figure out what the issue is here, or is Trey just stirring the pot.
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