Is this ECU chipped?
03-13-05, 12:57 PM
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Is this ECU chipped?
Hi,
before I start, I will just fill you in on the background story.
I just bought this JDM FD. It has a catback, JDM 2.5" DP,HKS intake, Greddy boost and EGT gauges, Mazdaspeed suspension, Mazdaspeed 15th anniversary wing . Everything else seemed stock.
When test driving it I noticed a .7- .5- .9 kg/cm boost pattern. I pushed it quite hard and guessed that it should be ok if the owner was driving it for a while like that.
Anyway, because the boost is above standard levels, I have been more and more worried that the fuel or intake temps(stock ic) are not good and I blow the engine. It must be noted that I have been driving it around quite a bit and it pulls hard and drives well.
Today I decided to check the ecu, hoping to find a sticker or something that indicated that it was an uprated ecu or something like that. Instead i found a Knight Sports FCD. I was not happy as I have tried a HKS FCD on my old FD and blown an engine bacause of the damned thing. (Inexperience, stupidity... I know, I know)
The ECU looks stock, except fot some writing on it. I can't believe the old owner would have had those mods, plus high boost, small IC etc and no extra fuelling. Getting desparate, I took out the ECU and decided to look inside.
This is what I noticed. The sticker on the outside had a serial number, and the chip I am pointing to has a different serial number. Is this the chip that is changed when people do the ecu upgrade?
Either way, I am going to get it on the dyno and check out the AFRs. But if it is definitely not a chipped ecu, I think I will have to be very lightfooted until I buy a PFC.
Anyway, the pics are attached, and I threw one in of the car just for fun. I just painted the car myself so I put in a before and after. I will post my painting adventure on another thread when I get time!
Thanks
Trevor
before I start, I will just fill you in on the background story.
I just bought this JDM FD. It has a catback, JDM 2.5" DP,HKS intake, Greddy boost and EGT gauges, Mazdaspeed suspension, Mazdaspeed 15th anniversary wing . Everything else seemed stock.
When test driving it I noticed a .7- .5- .9 kg/cm boost pattern. I pushed it quite hard and guessed that it should be ok if the owner was driving it for a while like that.
Anyway, because the boost is above standard levels, I have been more and more worried that the fuel or intake temps(stock ic) are not good and I blow the engine. It must be noted that I have been driving it around quite a bit and it pulls hard and drives well.
Today I decided to check the ecu, hoping to find a sticker or something that indicated that it was an uprated ecu or something like that. Instead i found a Knight Sports FCD. I was not happy as I have tried a HKS FCD on my old FD and blown an engine bacause of the damned thing. (Inexperience, stupidity... I know, I know)
The ECU looks stock, except fot some writing on it. I can't believe the old owner would have had those mods, plus high boost, small IC etc and no extra fuelling. Getting desparate, I took out the ECU and decided to look inside.
This is what I noticed. The sticker on the outside had a serial number, and the chip I am pointing to has a different serial number. Is this the chip that is changed when people do the ecu upgrade?
Either way, I am going to get it on the dyno and check out the AFRs. But if it is definitely not a chipped ecu, I think I will have to be very lightfooted until I buy a PFC.
Anyway, the pics are attached, and I threw one in of the car just for fun. I just painted the car myself so I put in a before and after. I will post my painting adventure on another thread when I get time!
Thanks
Trevor
03-13-05, 01:36 PM
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Here is the other board. There are only 2 boards, I have seen one of my friend's ecu with 3 boards. I think that may be the daughter board setup with plug in rom.
Can't see any chips of that size though!
Can't see any chips of that size though!
03-13-05, 01:42 PM
#4
nevermind my first comment I just remembered if it was chipped the chip on the bottom left and the chip above the square one on the right would be different from the rest, it does not look like it was chipped...Sorry it's been a while since I sold my ECU...
03-13-05, 04:11 PM
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Yep, that totally looks like a stock ECU. Every ECU I've seen that's chipped has the daugherboard, and every JDM chipped ECU I've seen has some sort of sticker on it and sometimes tamper-proof tape to make sure you don't take it apart.
Here's a good example of a chipped Japanese ECU -
http://cgi.ebay.com/ebaymotors/ws/eB...spagename=WDVW
Notice all the stickers. Many of them also have labels showing what it's tuned for. Japanese are really big on packaging, and you'd be hard-pressed to find a Japanese shop that doesn't put at least a logo sticker on the ECU.
Dale
Here's a good example of a chipped Japanese ECU -
http://cgi.ebay.com/ebaymotors/ws/eB...spagename=WDVW
Notice all the stickers. Many of them also have labels showing what it's tuned for. Japanese are really big on packaging, and you'd be hard-pressed to find a Japanese shop that doesn't put at least a logo sticker on the ECU.
Dale
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03-14-05, 02:13 PM
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The colour is RX8 Winning blue. If there was a House of Kolor n the UK I would have gone for their kandy blue but this one is still nice. Lots of metallic in the mix!
03-14-05, 02:16 PM
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About the ECU, looks like my car could be a timebomb with such high boost and no extra fuel. I will def be easing off the gas when I drive from now. Thats really hard to do cos it's such fun driving the FD.!
03-14-05, 02:21 PM
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Actually, now when I look at the attached Pettit ECU, it looks like the bottom chip has been changed, the same as the one I suspect has been changed on mine.
Does anyone know which data is held on which chips? Perhaps the fuel map is on one and the ignition timing and boost/boost cut off is on the other.
If so, it could be that mine has a richer fuel map, but standard timing and boost/ boost cut off. That might explain why there is and FCD fitted? Just a thought...
Does anyone know which data is held on which chips? Perhaps the fuel map is on one and the ignition timing and boost/boost cut off is on the other.
If so, it could be that mine has a richer fuel map, but standard timing and boost/ boost cut off. That might explain why there is and FCD fitted? Just a thought...
