Ok people... a few words about the mazdaspeed.

[Turbo Matty P]

good post Mr. Tea. I agree with 90% of it. I'm very happy with my car...or at least I will be once my hesitation/stumble problem is taken care of. Also, small mods like intake, exhaust, boost control turn this $20K car (with $500 mods) into a serious performer in just about ANY venue. p.s. Give all the SRT-4 owners you see out there props. They'll need it when their cars are slinging rods every other week. A buddy of mine just bought one and it's snapped one and bent another. He's running everything bone stock and enjoying his carpool with me!

 

[ForceFed]

*Just in case-PUTS ON FLAME RETARDANT SUIT!*

SRT-4............S_NAPPED R_OD T_URDMOBILE-4

I'm sorry ,I just couldn't help myself!(rofl)

 

[sumixxam]

Well said

Damn good post....(rockon)


(mspo)(rockon) (rockon)

 

[I-Am-Chris]

I guess you rellay didnt catch the point of that. anyways boostisgood you need BUSA-WHT lol

 

[I EAT Z3]

Great post. Regarding the hesitation it apears to be BAD ecu tuning on the part of Callaway, and Mazda allowing it to go out this way. Having both a boost and A/F gauge together kinda shows what's happening. When you roll into the throttle the boost does go up to ~6 psi, the A/F goes WAAAYYY rich and the car just sits there. I wish I could see what is happening with the timing at this point, but I can't. Then the ECU sobers up, reagains it's focus, probably tweaks the timing, and then get's back to accelerating. It may seem to some like Turbo lag, but according to my boost gauge, it's not. The boost IS there, but the power is not.

The problem is that sometimes it does this, and sometimes it doesn't. Had we not felt the car run right we may not have cared. We know what it SHOULD run like, now I just want that everytime I hit the gas.

 

[chwood]

Great post. Regarding the hesitation it apears to be BAD ecu tuning on the part of Callaway, and Mazda allowing it to go out this way. Having both a boost and A/F gauge together kinda shows what's happening. When you roll into the throttle the boost does go up to ~6 psi, the A/F goes WAAAYYY rich and the car just sits there. I wish I could see what is happening with the timing at this point, but I can't. Then the ECU sobers up, reagains it's focus, probably tweaks the timing, and then get's back to accelerating. It may seem to some like Turbo lag, but according to my boost gauge, it's not. The boost IS there, but the power is not.

The problem is that sometimes it does this, and sometimes it doesn't. Had we not felt the car run right we may not have cared. We know what it SHOULD run like, now I just want that everytime I hit the gas.

Hm - I've heard several people pointing in this direction for the hesitation culprit, while others are looking more toward the air intake as a solve. If its the ECU, then why would the CAI seem to clear up the issue, as some have said it did for them? And, if its NOT the intake and IS the ECU, what fixes are we looking at here? Getting Mazda to fix & flash it (just how likely is THAT to happen)? What aftermarket fixes (which don't exist yet, I know) would deal with this?

This hesitation is one of my ONLY beefs right now with a car that I LOVE (well, other than my dead sub...), so while I'm not much for mod-ing a car, I would REALLY like to clear this one up somehow.

 

[servoeyes]

Hm - I've heard several people pointing in this direction for the hesitation culprit, while others are looking more toward the air intake as a solve. If its the ECU, then why would the CAI seem to clear up the issue, as some have said it did for them? And, if its NOT the intake and IS the ECU, what fixes are we looking at here? Getting Mazda to fix & flash it (just how likely is THAT to happen)? What aftermarket fixes (which don't exist yet, I know) would deal with this?

This hesitation is one of my ONLY beefs right now with a car that I LOVE (well, other than my dead sub...), so while I'm not much for mod-ing a car, I would REALLY like to clear this one up somehow.

Good question about the CAI...here's what I think (in my best engineer's estimate) about that solution...the ECU is off because it can't draw in as much air as it needs. The programming may be close or slightly off on the rich side, but the CAI allows more air on a direct path in, totally changing the mixture. Now...normally we see 3-5whp gains from a CAI...small. Right now we're talking 12-15whp from injen's model! That seems to point to the injen being a partial solution to the problem. If the ECU was set to run more lean, I doubt, the CAI would have such an effect. Hence, the ECU still needs reprogramming for those interested in keeping the car stock. However...they could probably rate the car 10 crank-horse higher if they fix this issue as well. Of course...these are just estimates and I may just be throwing in some :bs:

 

[ping]

...so is Injen's model available yet?

 

[chwood]

...so is Injen's model available yet?

this question is more loaded than you know....



lol


last I saw it was ALMOST ready, so keep an eye on this thread for updates.

 

[oliver2000]

I changed my air filter to the K&N drop in....for a week it was much better......then it appears the ECU changed things based on the new amount of air.....stumbles and hesitation again...this time thou only when the engine is warm....maybe we are sucking in warm air...warm air has less o2 in it...maybe that helps the injen make the gain...

 

[z00mer]

Injen CAI

So far from what i`ve heard and read.....they hope to have it out by the middle of next month. Can`t wait!!!(yippy)

 

[chwood]

Good question about the CAI...here's what I think (in my best engineer's estimate) about that solution...the ECU is off because it can't draw in as much air as it needs. The programming may be close or slightly off on the rich side, but the CAI allows more air on a direct path in, totally changing the mixture. Now...normally we see 3-5whp gains from a CAI...small. Right now we're talking 12-15whp from injen's model! That seems to point to the injen being a partial solution to the problem. If the ECU was set to run more lean, I doubt, the CAI would have such an effect. Hence, the ECU still needs reprogramming for those interested in keeping the car stock. However...they could probably rate the car 10 crank-horse higher if they fix this issue as well. Of course...these are just estimates and I may just be throwing in some :bs:

hmm, I guess that makes sense (re: CAI + rich ECU) - of course I don't know jack about jack, so *shrug*.

If this IS the ECU, is a flash fix from Mazda likely or would this have to be fixed aftermarket? I'm fond of my warrantee and would really like to keep it after all.

 

[digi168]

Very well said.

 

[I EAT Z3]

The issue IS the ECU tuning. The car runs great sometimes, with a stock airbox then runs like crap other times. If it were only the intake it would run poorly all the time.

The question is what condition triggers it to run like crap one minute, and then pull great 10 minutes later. The CAI may mask the over rich condition by letting in more air to help offset the overly rich condition. But it's so drastic I don't think it's just richness, I think timing is being pulled out at an extraordinary rate.

I can't see them NOT fixing this problem as the Mazdaspeed name is in jeapordy if they don't. 10 years ago you could get away with this crap, but it's too easy to exchange information now, and bad news travels fast.

 

[Turbo Matty P]

Here Here, I agree about Mazda fixing this. This is the re-incarnation of their racing heritage (so-to-speak). If they're to let this go down then who is going to buy future models? I know for a fact I'm planning on buying a MAZDASPEED RX-8 in a few years once they're out and fully tweeked! I will not however, if they refuse to correctly tune the MAZDASPEED I own now. They have too much resting on this product to have 1000 out of 1750 unhappy customers!