front mount interboiler
22 October 2007, 10:56 PM
#5
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All cars seem to react slightly differently. When mine was done at the same time as turboback exhaust it was running really badly so i did have mapping done.
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23 October 2007, 09:39 AM
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I'm no expert, but it seems a point of good sense that if you change anything to do with the way air/fuel reaches the engine, it's a good idea to let the ECU know what's going on.
At the very best, it won't run optimally without the remap; you'll probably end up with more lag etc...
Ns04
At the very best, it won't run optimally without the remap; you'll probably end up with more lag etc...
Ns04
24 October 2007, 12:44 PM
#11
Fitting an efficient FMIC without a remap is foolhardy. You MIGHT get away with it but there is a chance you will not and nipping a piston in the bore from weak running or destroying an engine from DET is an expensive experience and a hard learned lesson.
What is certain is that without a remap you will only achieve partial performane from your set up. Why spend money to improve performance, accept only a partial gain and create a risk situation that threatens the well being of your engine?
The more mods you have the more essential the remap with the FMIC.
Surely the best course is to save up until you can afford an ECU or re-map. Far more sensible and probably cheaper with more enjoyment in the long run.
The reason for fitting an FMIC is to reduce charge temperatures. A colder charge is denser and requires more fuel. Because of the FMIC the shape of the map will also be somewhat different and without proper mapping you will have increased lag and delayed spool.
An FMIC should not be regarded as a fashion accessory. It is not a pice of bling. Don't fit it if you don't need it but almost every Classic regardless of year, WRX or STi will have high charge temperatures as the car is tuned above 300 bhp and earlier cars before that point. New Age cars have a more efficient set up and by the STi 8, Subaru have substantially addressed the deficiencies of the earlier cars but highly tuned cars will still suffer from high charge temperatures as there is a limit to what the TMIC design can handle.
If you fit a charge temperature guage with a probe just before the throttle, you will glean a lot of interesting information. Cost not exceeding £50 including postage and if you can solder bits together from Maplins or similar you can make your own guage for less than half that figure.
Oh and BTW do not be tempted to buy one of the e-bay specials advertised by a company from West Yorkshire. They have a high failure rate and there are a number of guys on here who have had very poor service and no refunds.
What is certain is that without a remap you will only achieve partial performane from your set up. Why spend money to improve performance, accept only a partial gain and create a risk situation that threatens the well being of your engine?
The more mods you have the more essential the remap with the FMIC.
Surely the best course is to save up until you can afford an ECU or re-map. Far more sensible and probably cheaper with more enjoyment in the long run.
The reason for fitting an FMIC is to reduce charge temperatures. A colder charge is denser and requires more fuel. Because of the FMIC the shape of the map will also be somewhat different and without proper mapping you will have increased lag and delayed spool.
An FMIC should not be regarded as a fashion accessory. It is not a pice of bling. Don't fit it if you don't need it but almost every Classic regardless of year, WRX or STi will have high charge temperatures as the car is tuned above 300 bhp and earlier cars before that point. New Age cars have a more efficient set up and by the STi 8, Subaru have substantially addressed the deficiencies of the earlier cars but highly tuned cars will still suffer from high charge temperatures as there is a limit to what the TMIC design can handle.
If you fit a charge temperature guage with a probe just before the throttle, you will glean a lot of interesting information. Cost not exceeding £50 including postage and if you can solder bits together from Maplins or similar you can make your own guage for less than half that figure.
Oh and BTW do not be tempted to buy one of the e-bay specials advertised by a company from West Yorkshire. They have a high failure rate and there are a number of guys on here who have had very poor service and no refunds.
Last edited by harvey; 24 October 2007 at 12:48 PM. Reason: 2 add last para.
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