I just got the access port for my MS6, I'm running a CAI and CB exhaust, so I'm running stage 1+. It says boost cut is supposed to be 15 psi but I'm running 17 pounds and spiking as high as 20. I'm a little worried, should I be? I know boost creep can be a major issue but I think I'm just getting spiking. I have a DP that I'd like to put on but I'm worried I'll just get more boost! I know 17 pounds should be safe on this car but it's not supposed to be without a BC right? When I run the stock tune I get 17 lbs boost spike but 16 steady psi, either stage 1 tune I use I start getting 18 to 20 lbs of boost spike. I'm welcome to any input, thanks.

Description: Stage1+SF 91 v100 - Intended for an otherwise stock
2006-2007 Mazdaspeed6 vehicle with a stock or cat-back exhaust and a
Cobb SF intake system only, and TMIC. 91 or 92 octane fuel. Boost
Targets: ~15.5psi peak boost pressure tapering down to ~13psi by the
6700 RPM redline, +/- 1.5psi.
Hardware Requirements: Otherwise stock vehicle with a COBB TUNING SF
INTAKE SYSTEM, STOCK BLOW-OFF VALVE (BOV), and STOCK FUEL INJECTORS
ONLY.


How long have you had the Cobb SF intake? If you don't have one, may I suggest running plain 'ole stage one for a while and see if you are spiking still.

Ya, I know what the description is, I've read it probably 20 times to make sure I didn't miss anything. I don't have the SF intake, I have the Injen cold air, I've done both stage 1 and stage 1+ and I get boost spike for both. The only time I don't get spike above 17 is on the stock setting, I'm running eco mode right now just to force me to be nice to my motor right now. Could an SF intake vs. CAI have any affective difference? I would think it's a very similar air flow. Correct me if I'm wrong, I'm still kind of new in the tuning world.

The differences in the MAF housings can have a huge effect on how your car runs..

So this might be ot but is cobb planning on releasing ots maps for injen and cpe CAI ? What about with Cpe cai and cat back ? Only asking because ppl on the forums seem to have all different permutations of mods.

For instance if cobb did release a map for cpe intake and cat back would some one,like myself or others, be able to use it if they had a test pipe?

Unfortunately that is the downfall of the COBB AP....it is not tuner specific, and you cannot calibrate it for your own personal mods

We are basically dependant upon cobb to tune the maps that we need and that isn't good

wait.....I'm stock besides a mazdaspeed cai and I'm getting spikes of almost 20, should I be worried?!?!?

In what rpm range are the spikes occuring. Do you know the difference between boost spike and creep as they are totally different. Boost creep is that pressure keeps building as the rpms increase and exceed preset limits. Is your boost not tapering off as the rpms increase. I know that I can cause boost spikes and I have seen as high as 21-22 psi under high load, low rpm situations. Say you are cruising at 65 (2800 rpm) in 6th gear and you are lazy and want to pass someone and push the accelerator down, boost will spike really high. This is why down shifting is always encouraged. I think everyone sees a spike at initial WOT.

J, have you ever bought something that you didn't have a complaint about?

On the side note, Cobb will look into adding tunes for other intakes once they finalize what they have right now. If you have a cp-e cai, you should run the stock stage 1 map, apparently it behaves similar to stock maf housing. Cat-backs do not require special tuning for. Also, I don't see much of a difference worrying about which map to be running for which mod and mine does not exactly match, etc... Are you not running with these aftermarket bolt on parts on a stock tune, shitty one from Mazda, and you are not worried about it?? There should be some concern as Cobb is fine tuning for the parts they list, but your computer is still in control and changing. This is where I have said before, that piggybacks are more dangerous as they are permanently lying to the ecu.

thanks, that is exactly the case when seeing my boost spikes, thanks for putting my mind at ease.

Just because you are not getting boost creep that doesn't mean you should keep the habit of trying to accelerate in 6th gear at 65 mph. People have gone zoom zoom boom in that exact same situation.

You guys are too worried ... check over some of my logs, stock & with Cobb ... they all spike a bit, mine into the 20's.

it will spike up to 17 or 18 sometimes, but the question is after it spikes does it go back down to like 15.5? thats all that matters. if you had boost creep it would keep going up.

as for using the stage 1+SF with the injen intake, not sure that is a wise idea because I know the injen doesn't flow like similiarly to the cobb sf and cp-e cai (only 2 you should use stage 1+ with)

Please read these sentences again. When I first got the DashHawk and looking at boost, I would notice this huge spike. This is not a major concern, but, could turn into one in a hurry. Not to scare you, but I think some of the motors that have blown, have been found to be at high load, low rpm condition. Even though the car does have power to accelerate, I recommend to downshift in this condition and I personally keep my throttle at or below 50% when the rpms are below 3500.

So I should just use regular Stage 1? And no, I'm not getting boost creep, I'm getting spikes of 20 and then it holds about 16-17 pounds, it never stays at 15. And I'm not getting the boost spike at low rpm, it happens when I'm running through the gears. Usually high rpm's... And I'm really worried about it because Mazda has already replace one motor under warranty for me BEFORE I did any mods.

yeah a spike to 17 isn't bad, as long as it isn't spiking and staying up high, but even 17 psi isn't that bad, now if it was like 22-24psi i would be worried.

IIRC Cobb advises to use only stock airbox, Cobb SF or CPE CAI with AP. They say that other mfg's CAI's have too much variation from one part to the next for use with their OTS maps.

So you will be seeing a similar problem with your fujita? And how does vibration in the intake have anything to do with throwing a map off?

That was variation, not vibration. Also, Cobb is working with beta testers on other intakes as well.

i get that on stage 1 spikes to 17psi settles at 15 at redline. no problems at all, AFR looks good.

Vibration's not the issue. Variation is (inconsistent dimensions due to manufacturing tolerances). Even from the same manufacturer, each CAI's dimensions will differ from one part to the next. Depending on quality control, manufacturing method and design, some manufacturer's will be more inconsistent than others. Unless the CAI's are predictable, it's probably too risky for Cobb to offer safe/reliable OTS maps.

That's one of the advantages of the fully customizable EMS solutions (CPE, Xede) - they can tune for your specific hardware. As for me and my Fujita, I'll probably sell it or stick in the garage when I guy the AP. It is expected that Cobb will enable full tunability down the road (but nobody knows how long that road is).

What are the indications of a motor that's about to pop. If you have your DH and your monitoring AFR's, KR & boost, wouldn't you have a heads up on when the engine is in danger? As long as there is no knock and afr's are @ or below 12, your probably okay right? I mean look at what woosh has done on stock internals. I'm just curious. I've been super cautious while experimenting withe the AP, and i have a 3 parameter screen on my dashhawk with AFR KR & boost, with one eyeball glued to it. Am i correct in assuming i'd see some increase in knock and AFR before my motor pops? Is this safe practice?

Unfortunately from what I have heard.....There is no warnings

Once it goes boom....It goes boom. Your life will be financially adjusted If the dealer does not honor your warranty......

Hmmm, scary. And as far as the dealer goes, i wouldn't put an ounce of faith in their warranty. They always find a way to deny warranty work.

If anyone is still interested, I will be doing datalogs as soon as I get a dashhawk and Cobb will be making some calibrations for me in relation to having the Injen CAI

Let me know how that goes.

PS...off topic, last SCCA event @ Miller next weekend, you should come.