| 09-25-2018, 01:32 PM | #1 |
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Running lumpy on cold start
Just had my second cats cut out and pipe welded in and stainless exhaust fitted from there I have only used it a couple of times since but I have noticed when I start it from cold it's very lumpy and splutters a bit for about 20 seconds and then it's fine. IS it the exhaust or just coincidence it's a 65 plate m4 with 10 thousand miles
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