hittin fuel cut at stock boost.....anyone else???

[kwiktsi]

Re: Warming

I totally agree,
I always let the o2 sensors warm up before touching the throttle. Once the Apex-i TT starts reading a A/F then I start off. Never hammer your car. It dosn't make sense to super heat all the components all of a sudden. Cracked manifolds, oil starvation, warped/scored piston rings...

Later. Thread Jacked Sorry,

While your post is 100% correct about warming the components up before beating on it- all of you do let your cars warm up before beating on them, DON'T YOU ?- the problem with it fuel cutting prior to full warm up and not after isn't really the same thing. In this case- it fuel cuts due to the intake air temps (density). The engine could be fully warmed up, but the underhood and air temps are still pretty cold. This goes away after driving for a while because the under hood temps get higher and helps heat the air going through the MAF. Hope this makes sense .
Joe

 

[Fl_titanium3.5]

PLZ DONT YELL AT ME IM A BABY "16" Last night i felt the cut out around 7.5rpm can someone tell me what the hell to do?

 

[dominoy2k1]

are you serious about trying to "shifting" at 7.5k rpms?

 

[kwiktsi]

PLZ DONT YELL AT ME IM A BABY "16" Last night i felt the cut out around 7.5rpm can someone tell me what the hell to do?

If you felt something at 7.5K- it was the rev-limiter. I believe it is like 6800 or 7000 (can't remember on the MSP, someone want to chime in?). That is not fuel cut.
Joe

 

[Wiggles6983]

7K RPM sounds right for the rev limiter

 

[BinaryRotary]

PLZ DONT YELL AT ME IM A BABY "16" Last night i felt the cut out around 7.5rpm can someone tell me what the hell to do?

Lol, moron.

 

[jersey_emt]

Redline is 6500 RPM, rev limiter doesn't kick in to around 7300.

 

[kwiktsi]

Redline is 6500 RPM, rev limiter doesn't kick in to around 7300.

Maybe it is 7300 then, I can't remember... That sounds familiar though.. Either way, it is not fuel cut . Do not hold the car against it either- it is there for a reason and this motor with it's "glass" rods doesn't need to be stressed any more than it needs to be .
Joe

 

[boostisgood]

(lol) dear lord, its not a Honda.

 

[silverturbozoom]

i hit it runiing home last week

about 135 mph.....6500rpm

does that sound right?

 

[Installshield 2]

one good thing is if this keeps happening, maybe Mazda will be forced to raise the cut point ..

BTW- I do not know if the MSP is different from every other car in regards to cutting spark and not fuel, however, completely cutting fuel will not caus edetonation or engine damage of any sort- a lean mixture is a mixture with too little fuel to burn cool enough, if there is no fuel at all, it will not burn, therefore not burn anything up .. Lean is bad, completely cutting fuel is not as bad. Now, if you were at WOT and you shut off your fuel pump, it would have enough time to lean and possibly burn something out, but cutting the injectors is instantaineous. I hope htis makes some kind of sense .
Joe

Sort of...but pertaining to a mixture that is dead rich, such as that at below normal operating temperatures, there will always be enough residual fuel vapor for a lean mixture...a hellishly lean mixture, so lean that you are correct it may not even ignite...so detonation would not always happen, but it still could and it is generally regarded as the least safe way to limit an engine...Theoretically fuel cuts would work fine, but most engine's are not efficient enough to burn everything up and push everything out in a single 4 stroke cycle...

 

[pluto316]

PLZ DONT YELL AT ME IM A BABY "16" Last night i felt the cut out around 7.5rpm can someone tell me what the hell to do?

So, when your engine blows up can I have a good deal on the remaining parts??

 

[Brian MP5T]

Speed Limiter

i hit it runiing home last week

about 135 mph.....6500rpm

does that sound right?

That sounds more like a speed limiter.

Thats another way to make extra parts available for the masses.

 

[nictlg7]

one good thing is if this keeps happening, maybe Mazda will be forced to raise the cut point ..

BTW- I do not know if the MSP is different from every other car in regards to cutting spark and not fuel, however, completely cutting fuel will not caus edetonation or engine damage of any sort- a lean mixture is a mixture with too little fuel to burn cool enough, if there is no fuel at all, it will not burn, therefore not burn anything up .. Lean is bad, completely cutting fuel is not as bad. Now, if you were at WOT and you shut off your fuel pump, it would have enough time to lean and possibly burn something out, but cutting the injectors is instantaineous. I hope htis makes some kind of sense .
Joe

I beg to differ, my 2 1/2 month ordeal and new engine should be proof enough to show that the fuel system is a mess on the MSP. My engine blew @ 3 months, about 4100 miles. The dealer says the car ran lean, and broke a piston up. You could hear the knocking across the Nevada desert once I got to Vegas the night the drama began. It was a nightmare getting that engine replaced, enough to probably be the final straw that will keep me from purchasing any Ford products in the future.

 

[kNOWfREED0m]

its the injen, im also running really rich, balack all around the inside of my exhaust tip, the solutions are get your car flashed, (dident really help that much) or take the injen out and run stock airbox

 

[jersey_emt]

enough to probably be the final straw that will keep me from purchasing any Ford products in the future.

Since when is the MSP a Ford product?

 

[tekkie]

well the ECU is lol

 

[nictlg7]

Since when is the MSP a Ford product?

Hmm...let's think...the 80's. Where have you been dude. (confused) Mazda was purchased by Ford decades ago, so the MSP is very much a Ford product. Mazda's share parts with Ford's, everyone knows that. The Mazda 6 is actually going to be replacing the Ford Taurus and/or Mercury Sable soon. The Tribute shares the Escape's engine. The main thing is though, the bean counters for Ford are the ones cutting the budget on the Mazda warranties. They are the ones who want Mazda to cut back on warranty repairs. In fact, they didn't want the RX-8 to be finished, due to previous warranty problems, and they don't believe in the rotary engine. It has been ready for years, and is just now getting to the market. So yeah, thank my friends in Dearborn for our denied warranty claims. They get their cars, gas, maintance, insurance, car washes for free! (pissed)(gun)

 

[tekkie]

I think he knows the part about Ford owning it, his point is that the MSP was not influenced by Ford and actually does not use many Ford parts. Pretty much everything in the car is made by Mazda and was designed in Japan, which is a good thing keep Ford away from our cars lol

 

[nictlg7]

I think he knows the part about Ford owning it, his point is that the MSP was not influenced by Ford and actually does not use many Ford parts. Pretty much everything in the car is made by Mazda and was designed in Japan, which is a good thing keep Ford away from our cars lol

Well...my point was that Ford bean counter are still in control here, regardless of what parts are on the car, or who was involved in building the car. Whether it was Mazda/MazdaSpeed/Racing Beat, or the Callaway brothers...when it comes down to it, the Ford Motor Company is the one making the financial decisions. They are the ones cutting back the warranty budget. That is the reason it is so hard to get our cars fixed properly under warranty. At any rate, back on topic, When Greddy finally gets around to installing my new exhaust, will that help this problem, because I will have less back pressure? Should I be replacing my converters with a better flowing downpipe as well? (no cats) Finally, will the Greddy Profec B Spec II they are also supplying me with soon help this problem? I know it controls the turbo more effeciently, and I have heard it spools faster when controlled with one of the Electronic Valve Controllers (or EBC's). If this stuff doesn't work, I will just have to be patient and wait for a standalone engine management to be finalized, huh? Thanks for any input!