Search found 1511 matches

by mituc
June 28th, 2026, 10:51 am
Forum: Series I Tuning
Topic: Air Fuel Ratio Base
Replies: 5
Views: 34574

Re: Air Fuel Ratio Base

CrazyCanadian wrote: June 28th, 2026, 2:08 am Log in Lambda... Stop living 20 years ago thinking in AFR's...
In these logs AFR = Lambda * 14.7. So it's more or less Lambda...
by mituc
June 24th, 2026, 4:32 am
Forum: MAZDASPEED3/Mazda 3 MPS Tuning
Topic: Regarding the Removal of Speed Limits
Replies: 5
Views: 1645

Re: Regarding the Removal of Speed Limits

It seems the boost pressure is off too, so I decided to check the EBCS. You can look at several parameters: boost, load, whatever, but the conclusion is the same: your car is far far away from what it should do in terms of power. In your last log you used 2nd gear which is not the best because ther...
by mituc
June 22nd, 2026, 5:39 pm
Forum: MAZDASPEED3/Mazda 3 MPS Tuning
Topic: Regarding the Removal of Speed Limits
Replies: 5
Views: 1645

Re: Regarding the Removal of Speed Limits

That is absolutely fine, a 3MPS BK reaches 200kmph in 5th at about 6000rpm which is the sweet spot on these engines for peak power.
The problem with your car is that it makes probably around 180-190bhp in a good day. Either the EBCS is fitted backwards, or it is stuck closed.
by mituc
June 22nd, 2026, 1:03 am
Forum: MAZDASPEED3/Mazda 3 MPS Tuning
Topic: Regarding the Removal of Speed Limits
Replies: 5
Views: 1645

Re: Regarding the Removal of Speed Limits

Stock 3MPS BK speed limit is at 250kmph or something, that is about 270kmph on the dash. 200kmph is nothing for these cars, stock or tuned, they will get there pretty fast. Next time you push it to that speed also log that run and let's see what actually happens, most likely your car developed a sma...
by mituc
June 19th, 2026, 3:31 pm
Forum: NC2/3
Topic: P0101 after larger throttle body install
Replies: 8
Views: 6588

Re: P0101 after larger throttle body install

The first two logs were damaged in transfer. The 3rd log only has the long term fuel trims, but we can see that it only goes from 2.3 to 4.7% so the deviation is well within limits. Changing the throttle body will have no effect on the MAF calibration. Also, P0101 usually pops up when the MAF voltag...
by mituc
June 4th, 2026, 8:48 am
Forum: Gen 2 Tuning
Topic: knock low load
Replies: 13
Views: 7052

Re: knock low load

Do not use an ebay timing kit. Get an OEM kit from reputable vendors: corksport, graveyard, edge, SP63, and so on. Those 150$ kits from ebay will work ok on 2.3NA engines but not on ours (they will actually work but not for long, and not properly, and you do not have all the necessary parts such as ...
by mituc
June 4th, 2026, 2:49 am
Forum: MAZDASPEED6/Mazda 6 MPS Tuning
Topic: Tuner MIA
Replies: 1
Views: 1035

Re: Tuner MIA

Well, look at the bright side... the tune you've got is... not what I'd expect from a professional tuner. Luckily the car doesn't make too much power and considering how the tune is made the car may not live long enough to ever make too much power. So seriously, follow your own advice and find anoth...
by mituc
June 3rd, 2026, 10:30 pm
Forum: Gen 2 Tuning
Topic: knock low load
Replies: 13
Views: 7052

Re: knock low load

Could it be excessive heat under the hood? No, absolutely nothing to do with the engine bay heat, which you do not have in excess BTW. And even if you did, at low loads it doesn't matter, it's actually a small amount of free energy that you push into the engine. At this stage I'd get the VVT diagno...
by mituc
June 3rd, 2026, 5:02 am
Forum: MAZDASPEED6/Mazda 6 MPS Tuning
Topic: MazdaSpeed6 Fuel Pressure Tuning?
Replies: 2
Views: 2361

Re: MazdaSpeed6 Fuel Pressure Tuning?

I do not recommend upping the fuel rail pressure targets, because with aftermarket HPFP internals the pump will already make 50-100PSI over target, and if you up the target then the pressure relief valve (which is mechanical) will work full time an will eventually fail. The flow is proportional with...
by mituc
June 3rd, 2026, 4:53 am
Forum: Gen 2 Tuning
Topic: knock low load
Replies: 13
Views: 7052

Re: knock low load

Ok. So every single time the ECU commands some cam timing, knock retard follows shortly after. Every single time, no exception. The AC may increase the load a bit and the need for the ECU to command more cam timing. So get the car checked and make sure the AC pulley bearing is not dry and about to f...