1.6l cai hessitation cure..

[Shane5425]

i have found the cure, get a fuel pressure regulator and boost the fuel psi by 10 psi, i did that on mine with my begi rrfpr because i will be boosting soon , so i put it on.. and no more hesitiaton, smoooth rpm band, more power... works great... here are some pics..

[MIA protege]

nice ... good find shane

[Marik123]

Is that means you waste more fuel by boosting the fuel pressure? Also how much is that fuel pressure regulator?

[Shane5425]

not much, no more than 10mpg

[jster28]

it might fix the 1.6 cai hesitiaton. But it doesn't get rid of the stupid check engine light that always comes on from the cai. But with a n/a setup it is already running on the rich side, with the regulator it is even more.

[Shane5425]

no check engine light for 4 months knock on wood..
even before i did this mod...

[steve_protege]

i have found the cure, get a fuel pressure regulator and boost the fuel psi by 10 psi, i did that on mine with my begi rrfpr because i will be boosting soon , so i put it on.. and no more hesitiaton, smoooth rpm band, more power... works great... here are some pics..

How soon do you plan on boosting?

[Shane5425]

once iget settled in on my new job and school, so prollly a month or 2...

[steve_protege]

once iget settled in on my new job and school, so prollly a month or 2...

Oh wow! Very cool. Do you have your kit and needed accessories gathered already? Or are you about to buy a complete kit? What PSI do you plan on boosting to?

[Shane5425]

i have my fuel system done, and pipeing will be custom by a friend.. the 2 parts i need are the turbo and manifold, once i get them , its only a matter of getting all the fittings for the oil and coolant to turbo setup, the boosting to 6psi, and when i get an intercooler 7-8 psi..

[steve_protege]

Sounds good. You have an auto or no?

[Shane5425]

auto

[steve_protege]

Sounds good. Let me know how everything comes about when its up and running. I want to boost in the future but a little leery about screwing up my tranny. Sounds like you know what you're doing though. Best of luck though.

[tyrant13]

i have found the cure, get a fuel pressure regulator and boost the fuel psi by 10 psi, i did that on mine with my begi rrfpr because i will be boosting soon , so i put it on.. and no more hesitiaton, smoooth rpm band, more power... works great... here are some pics..

Means to set the fuel regulator to 10psi? which is 0.7bar approx? I had a fuel regulator gauge, and i set it to 2 bar??

[Shane5425]

no, 10 psi above stock. stock is around 30-35 idle, mine is now 38 to 42 idle

[neenee6988]

Has anyone tried using a MAF sensor off another Mazda? Maybe a 626 or Miata? I have never looked to see if they would plug in, or if they're compatible with the computer. I hate looking at that damn check engine light, and the hesitation sucks.

[B-rock]

i have found the cure, get a fuel pressure regulator and boost the fuel psi by 10 psi, i did that on mine with my begi rrfpr because i will be boosting soon , so i put it on.. and no more hesitiaton, smoooth rpm band, more power... works great... here are some pics..



BUMP from the dead.

OK here is the idea, i want to go Supercharged or turbo but that is down the road BUT I want to try this and see how it will work out in a N/A car and if it will Bump up the power.

I got a SW A/F gauge (Not wide band cause i am a cheap dutch guy) will i be able ot tune it right using this or will i be running it so rich thing's will die ??

I need more info, but i would love to try this.

Byron

[zerocover]

It will bump the power just becuase the intake will finally be doing its job.

[mazpro]

that's cool. how much are the Begi's going for now, I can't seem to find a price anywhere..

[B-rock]

See i would like to know if something like this would work better as it has a gauge built in

http://cgi.ebay.ca/FUEL-PRESSURE-REGULATOR-VW-GOLF-GTI-BEETLE-JETTA-93-03_W0QQitemZ8028688572QQcategoryZ33577QQrdZ1QQcmdZ ViewItem

also will an N/A be able to tune this right just using a A/F gauge (Not wide band though)

[TampaSport20]

See i would like to know if something like this would work better as it has a gauge built in

http://cgi.ebay.ca/FUEL-PRESSURE-REGULATOR-VW-GOLF-GTI-BEETLE-JETTA-93-03_W0QQitemZ8028688572QQcategoryZ33577QQrdZ1QQcmdZ ViewItem

also will an N/A be able to tune this right just using a A/F gauge (Not wide band though)

Narrow Band A/F guages are worthless

[B-rock]

Narrow Band A/F guages are worthless



I know that, i got it in a deal with another gauge that i wanted so i said i would use the rice.

But i still wonder if it would work for the little thing's like this.
cause right now it's all good as my INtake is modded for the winter, but come spring it's back to the CAI and the "system to lean" shit.

[tnkopher1]

narrow band gauge is only good if you have A.D.D and you enjoy the pretty colors cycling. for most people the difference between a good tune and a dead motor is displayed on the last led that lights up. however for basic tuning get yourself a voltmeter and tap into your o2 sensor. it needs to show .9x volts not just .9 that way you can at least come close. aim for .92 to .94 volts that should be ok. we use that for 3000gt vr4's and dsm's so you might be able to go leaner with no boost. if yo have a way to log your knock counts then you can check them as well.

[TampaSport20]

narrow band gauge is only good if you have A.D.D and you enjoy the pretty colors cycling. for most people the difference between a good tune and a dead motor is displayed on the last led that lights up. however for basic tuning get yourself a voltmeter and tap into your o2 sensor. it needs to show .9x volts not just .9 that way you can at least come close. aim for .92 to .94 volts that should be ok. we use that for 3000gt vr4's and dsm's so you might be able to go leaner with no boost. if yo have a way to log your knock counts then you can check them as well.

well said

[tnkopher1]

well said
Thank you.

Also tuning your car by adjusting base fuel pressure is very crude and you will experience rich situations especially at idle/cruising. you really need an afc to tune right but if you dont mind the all aound loss of fuel economy for the 5 hp you will gain "up top" then go ahead.

[steve_protege]

no, 10 psi above stock. stock is around 30-35 idle, mine is now 38 to 42 idle

Still no problems with the hesitation? My CAI is starting to hesitate like crazy. Every time I stomp on the gas (well, not stomp, but aggressively get on it) the car hesitates for a bit, then gets going. I think this might be one of the reasons why I sometimes on occasion get stuck in between gears (normally between 1st and 2nd) and get bad gas mileage.

How much did you say one of those rising rate fuel regulators cost?

[steve_protege]

well said

Kinda off topic, but real quick, did you cure your hesitation with O-ring gasket fix? Im about to do that, but want to make sure it works before buying numerous rings and wasting my time with them.

[Shane5425]

dont waste ur time, i riped all that shit out... it cures it for a lil while but always comes back... i just leave my stock intake with no air ducts... you actuall get more power that way..

[steve_protege]

dont waste ur time, i riped all that shit out... it cures it for a lil while but always comes back... i just leave my stock intake with no air ducts... you actuall get more power that way..

Don't waste my time with what? The fuel regulator or the O ring thing? I would think the O ring thing would work because it'll work the same way that the bike intertube fix would work. It would make that seal around the MAF meter.

Knowing the problems the CAI is causing, I probably would of kept my stock intake system and did some modifications to that. But I dont sold all of that away because I heard good things about the CAI. Overall, Im happy with the intake, but I want to get rid of this hesitation in the worst way. I don't think my car has realized its potential with the CAI.

[zerocover]

The O ring thing only helps alittle, to plug up a possible vacume leak, because the cai is metal and wont have any give to it, unlike the plastic air box. This only helps fix the fact that the intake was poorly made.

The maf still wont read properly. Youll still get hessitation. But now you can be sure its not a vacume leak and tune it someway. Looking at the stock protege dyno and a/f I can say with confidence that it should have no problem auto tunning to make up for the rich areas. A FPR should be a simple enough fix to help bring the maf to the point where it wont throw a cel then the car should learn (auto tune) the way the maf reads and give a happy 14.7:1.

Ive actually been able to drive the car very lightly with the cai on and even had the cel go away. IT always came back when I really got on the gas though. The trick is gonna be to make the rai work, that thing had problems.

[Shane5425]

the fuel regulator got ride of it.. i am talkin about the seals around the sensor... they always eventually leak...

[TampaSport20]

best way to do a CAI guys is to cut the stock mount for the MAF out of the airbox... I've NEVER got a CEL with mine

[Shane5425]

best way to do a CAI guys is to cut the stock mount for the MAF out of the airbox... I've NEVER got a CEL with mine

i did that, never got a cel,but i still had a hesitation around 3k...

[steve_protege]

Im hoping that the hesitation is happening because of a vacuum leak around the MAF sensor. Before I put the CAI on, I never had any problems with the car being a little sluggish and hesitating when I press the gas. So I know its got be something with the CAI. If the intake itself is poorly made, what else for the 1.6 00 sedan is available that won't cause a CEL or hesitation?

[Shane5425]

hehe, hiboost.....

[TampaSport20]

would this allow us to run bigger pipes on our intake ???

says it's for a toyota, but OBVIOUSLY it is the same MAF as ours

pic from hassturbo.com

http://www.hassturbo.com/pic-gallery/gallery-im/MR2-3-inch-MIFI-2.jpg

[zerocover]

Thats quite the restrictive turbulence creating block of metal weilded into the pipe.
Makes sense that it would work though (at least help), prob by making air flow as it would stock. I would rather run the spectre 3" strait through, and find some other way to take away the cel.

Do the toyota guys have any decent fixes for our maf?

[TampaSport20]

Thats quite the restrictive turbulence creating block of metal weilded into the pipe.
Makes sense that it would work though (at least help), prob by making air flow as it would stock. I would rather run the spectre 3" strait through, and find some other way to take away the cel.

Do the toyota guys have any decent fixes for our maf?

bet it would still out flow the stock pipe....

I'll have to do some research on the toyota guys having a fix....

[TampaSport20]

One thing I keep forgetting...what matters is the voltage our ECU sees from the MAF, even if it's the same MAF as other cars, the voltage their ecu's are expecting may not be the same (braindead

[zerocover]

If they have an easy diy we could always adapt it.

As long as its not a pre made product becuase then its be useless to us.

[steve_protege]

So how is the research coming along? Are we (well, you all) any closer to finding out what is causing that 1.6 hesitation problem? And then finding the cure for it?

[Shane5425]

i think i am about to find a cure in april..... top secret....

[zerocover]

Ive got a cure.
Buy a megasquirt for $75 install megasquirt done!
Cheapest, most reliable and it will net us the most power!

[canadianguy]

whats a megasquirt?

[zerocover]

Standalone ecu with a wbO2, a router board, the MSII chip, and a injection router it would actually tune itsself.

Ive done the math ebay sells them for $125, the MSII is $75, I can get a wb for $60, all thats left is the router for the fuel injectors (to make it run as sequential injection instead of batch, its not nessesary but Im not taking any steps back).

http://www.bgsoflex.com/megasquirt.html