GolfGTIforum.co.uk
Model specific boards => Golf mk4 => Topic started by: jman-gti aum on 03 June 2013, 09:37
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Basically has eany one ever fitted a decat to the standard 1.8t exhaust, what's the pros and cons and how did it sound, as well as the gains on the dyno. Thanks :shocked:
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Will gain very little on a standard 1.8t, once your into remaps etc then it will help but you will need it for the mot.
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Turbo will spool up quicker and you will get a louder slightly deeper exhaust note.
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Well off for a remap but I cba with a full turbo back might just decat, want car to be as quiet as possible
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standard exhaust and cat is fine for a stage one map..
pro`s of a decat : more flow ready for big power, standard cat is very restrictive.
cons : you`re gonna get very pissed off changing it over every MOT time.
conclusion: if you can afford a sports cat, get one!
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So stick with standard exhaust for stage 1 then as not worth the extra costs
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if can live with the hassle or know of a friendly garage then a decat is well worth doing even on a stage 1 generic map will get more power and quicker spool up
standard downpipe is very restrictive due to size, ditching for a bigger bore and decat massively helps flow even with standard exhaust.
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Basically has eany one ever fitted a decat to the standard 1.8t exhaust, what's the pros and cons and how did it sound, as well as the gains on the dyno. Thanks :shocked:
Sound will be slightly deeper, dyno gains will be minimal. Do you plan to have it remapped?
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i noticed a big difference with 3'' decat fitted car gets going much quicker and turbo noise lush but this is will full turbo back and air filter etc