Does de-catting an STi require re-map?
29 October 2003, 06:31 PM
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Ive heard it mentioned a lot on the bbs about having to remap the ECU if u run a full de-cat system.How does this affect MY98 STI's as the ECU's are not remappable? Does this mean the ECU has to be changed to a link for example,seems a bit drastic to me as i know a few people with STi's that just had the de-cat done and that was it,they havent reported any problems.What do you think?
29 October 2003, 06:52 PM
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Fitting a knocklink will let you know whats happening, and a boost gauge. Boost spikes might be a problem, which can be sorted out by drilling out the restrictor. Use octane booster too. 
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