obd-0 cipping
ok I bought a stchiptuning.com performance chip of the net and was wondering if anyone has experience with the company. Also so i have to do anything else but soder in the socket
I'm sorry, but I am going to have to give you my chip speach -
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by http://www.sdsefi.com/techchip.htm »</TD></TR><TR><TD CLASS="quote">Chips vs. Programmable EFI
We get a lot of calls here at Racetech from people who are unhappy with their performance aftermarket ECU chips. Why is this so?
The first reason is that on most naturally aspirated engines operating on pump fuel, the only way to achieve tangible power gains is by increasing airflow through the engine. Chips cannot do this therefore they cannot make much difference in power output. Chip re-programmers can richen the mixture slightly at full throttle and advance the ignition timing slightly perhaps but this would be at the expense of lowering the factory safety factors for detonation and emissions. The absolute maximum gain in this instance would be on the order of 5% and could be as little as 0%. Most independent tests that I have seen on performance chips for naturally aspirated engines have indeed shown minimal or no gains in acceleration. Some were slower than the factory chip.
Chips for use in factory stock turbocharged applications can increase power substantially in some cases by raising the boost pressure. This again reduces the factory detonation limits and you risk engine damage. Without increasing fuel octane, you are asking for trouble especially if your engine does not have a knock sensor.
Finally, we have chip companies doing "custom" chips for modified engines. What does this involve? This is a technically sound modification only if your engine has the same mechanical mods as the motor on their dyno that the chip is being developed for. If your cams, heads, turbo, exhaust, intercooler, injectors, throttle body or fuel are different, the chip will not be correct for your engine. A chip made for an engine slightly different from yours will be slightly wrong under some conditions. In some cases, poor driveability and performance are the result.
The only way to get good results on a modified engine with different mods from the base engine is to take your vehicle to the tuners facility and get a true custom chip burnt for your engine. This must be done on a chassis dyno then tested on the road also for driveabilty faults which often don't show up on the dyno. This will cost
more.</TD></TR></TABLE>
Now time to be helpful -
What year is you ECU? There is a design difference between 88-89 and 90-91 that needs to be taken into account.
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by http://www.sdsefi.com/techchip.htm »</TD></TR><TR><TD CLASS="quote">Chips vs. Programmable EFI
We get a lot of calls here at Racetech from people who are unhappy with their performance aftermarket ECU chips. Why is this so?
The first reason is that on most naturally aspirated engines operating on pump fuel, the only way to achieve tangible power gains is by increasing airflow through the engine. Chips cannot do this therefore they cannot make much difference in power output. Chip re-programmers can richen the mixture slightly at full throttle and advance the ignition timing slightly perhaps but this would be at the expense of lowering the factory safety factors for detonation and emissions. The absolute maximum gain in this instance would be on the order of 5% and could be as little as 0%. Most independent tests that I have seen on performance chips for naturally aspirated engines have indeed shown minimal or no gains in acceleration. Some were slower than the factory chip.
Chips for use in factory stock turbocharged applications can increase power substantially in some cases by raising the boost pressure. This again reduces the factory detonation limits and you risk engine damage. Without increasing fuel octane, you are asking for trouble especially if your engine does not have a knock sensor.
Finally, we have chip companies doing "custom" chips for modified engines. What does this involve? This is a technically sound modification only if your engine has the same mechanical mods as the motor on their dyno that the chip is being developed for. If your cams, heads, turbo, exhaust, intercooler, injectors, throttle body or fuel are different, the chip will not be correct for your engine. A chip made for an engine slightly different from yours will be slightly wrong under some conditions. In some cases, poor driveability and performance are the result.
The only way to get good results on a modified engine with different mods from the base engine is to take your vehicle to the tuners facility and get a true custom chip burnt for your engine. This must be done on a chassis dyno then tested on the road also for driveabilty faults which often don't show up on the dyno. This will cost
more.</TD></TR></TABLE>
Now time to be helpful -
What year is you ECU? There is a design difference between 88-89 and 90-91 that needs to be taken into account.
Don't think that'll work -
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote »</TD></TR><TR><TD CLASS="quote">The PM8 came in the US on 88-91 CRX HF. These ECUs always lacked external ROMs, and they seem to be just a wee lil bit different than PM6/PM7 in terms of hardware configuration. They are much more similar to the PM6/PM7 than the PR4</TD></TR></TABLE> That difference in hardware bugs me into thinking of sticking with a PM6 or PM7.
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote »</TD></TR><TR><TD CLASS="quote">The PM8 came in the US on 88-91 CRX HF. These ECUs always lacked external ROMs, and they seem to be just a wee lil bit different than PM6/PM7 in terms of hardware configuration. They are much more similar to the PM6/PM7 than the PR4</TD></TR></TABLE> That difference in hardware bugs me into thinking of sticking with a PM6 or PM7.
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