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Discussion Starter · #1 ·
Who is running a 440cc chip with 550cc injectors in their 7MGTE car? How lonc and did it work nice?
 

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Heavy Metal Momentum
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FWIW Mike, I'm running a techtom 440 program with 550s/Lex and seeing A/Fs over 10:1 (9.7 in places)
Brian
 

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LEADED FUEL ONLY
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If you can burn the chip, I've got the data. Burning a chip isn't a big deal.. pretty easy to do if you've got the equipment.

I bet an electronics store (not radioshack) would do this for you for little to no money.
 

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Discussion Starter · #5 ·
I have the 550cc chip in my VPC. Car just runs fat in everyday driving and its almost perfect at WOT. I have heard you can run a 440cc chip in the VPC to knock back fuel during non WOT driving.
 

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boost freak
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aljordan said:
If you can burn the chip, I've got the data. Burning a chip isn't a big deal.. pretty easy to do if you've got the equipment.

I bet an electronics store (not radioshack) would do this for you for little to no money.
since when do you have the data? what else you got? we should look into building a DB of various data files....
 

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LEADED FUEL ONLY
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drjonez said:
since when do you have the data? what else you got? we should look into building a DB of various data files....
I've had this data for a while. Its a .bin file. We read the chip we got from HKS. I've got both 550 and 440 data I think.

Jobe and myself thought we could adjust the 550 chip's data to make it closer to 720s.

If you want this info, shoot me a PM.
 

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Super Moderator
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Mike 92LX said:
I have the 550cc chip in my VPC. Car just runs fat in everyday driving and its almost perfect at WOT. I have heard you can run a 440cc chip in the VPC to knock back fuel during non WOT driving.
That seems kind of backwards, wouldn't the 440cc chip be keeping the injectors open longer at any given point? Using a 550cc chip with 440's would result in leaner A/F's because the 550cc chip pulls duty cycle to compensate for the 550s... or am I missing something here?

I'm running a 550cc chip with denso purple top 550's. I added a JDM Mine's ECU to the mix and you can see how much it messed up my A/F's in my dyno sheet in my sig. Before I added the ECU I never had it on a wideband but the spark plugs were perfectly grey and the car idled much better.
 

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Discussion Starter · #10 ·
Not sure. I have 550cc injectors with a 550cc chip in the VPC. At wot car runs fine(12.0s on wide band) but fat everywhere else. I think I will change to a new o2. Scanned it for codes-nothing but it could be dead.
 

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Powerful Jedi.....
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What about 550 chip with 440 injectors?
 
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