Overrun crackles and burbles added to your custom remap, set up in-house on our Dyno Dynamics DS450 4WD dyno. We tune how loud and how often, and we’ll tell you honestly what it means for your exhaust, your cat and your MOT.
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No generic files, written for your car
Serving Bedfordshire, Cambridgeshire, Northants & MK
A pops and bangs (or burble) map changes what the engine does when you lift off the throttle. Instead of cutting fuel completely, the map lets a small amount of fuel burn in the hot exhaust, which gives the crackles and bangs you hear on the overrun. On most turbo petrol cars we add it to a Stage 1 or Stage 2 remap, so you get the extra power and the sound in one visit.
Not every car is a good candidate. Diesels and some petrol engines don’t suit it, and on a car with a standard catalytic converter we keep the effect mild to protect the cat. We’ll tell you what to expect on your car before you book.
We scan for fault codes and check the exhaust and cat are in good order before we change anything.
Your car goes on our 4WD dyno for a baseline power and torque run.
We write the overrun map with your remap and agree how mild or loud you want it, then refine it on the dyno.
A final run proves the power gains, and you hear the result before you drive away.
Off-the-shelf burble files often run the overrun fuelling and timing too hard, which can overheat a catalytic converter or stress the turbo. We map the overrun on our Dyno Dynamics DS450 4WD dyno with live datalogging, so exhaust temperatures and fuelling stay in a safe range. If you change your mind later, the effect can be reduced or removed by re-mapping.
Fixed prices for most makes and models, including VAT. Not sure which stage is right for you? Send us your car and modifications and we will advise.
inc. VAT. Standard car, custom map.
inc. VAT. For cars with supporting mods.
Big turbo, fuel and engine builds.
Pops & bangs is added to a Stage 1 or Stage 2 remap. Ask us for the add-on price for your car when you get in touch.
Pops and bangs suit most modern turbocharged petrol cars, especially hot hatches such as the Golf GTI and R, Audi S3, Focus ST and BMW M135i/M140i. Results depend on the exhaust: a sports exhaust is louder than a standard one. We recommend keeping a catalytic converter on any car used on the road, and we’ll keep the map mild if you do.
Read about our Stage 1 remap and Stage 2 remap, or our 4WD rolling road.
Pops & bangs is an add-on to a Stage 1 (£360 inc. VAT) or Stage 2 (£540 inc. VAT) remap. Ask us for the add-on price for your car.
An aggressive overrun map can overheat the catalytic converter and add stress to the turbo and exhaust. We map it on the dyno with datalogging and keep it within safe limits, and milder on cars with a standard cat.
The burble itself is not an MOT test item, but the MOT does check exhaust emissions and that the exhaust isn’t excessively loud. With a working catalytic converter and a road-legal exhaust, a sensibly mapped car should pass.
There is no law against a burble map, but excessive exhaust noise on the road can lead to a fine, and some areas now use noise cameras. That’s why we agree the volume with you and keep road cars sensible.
No. Overrun crackles are a petrol-engine effect, and we don’t add them to diesels.
Yes. A remap, including a pops & bangs map, is a modification and you should tell your insurer.
Tell us your car and we will confirm your price and a date. We are at Little Staughton, Bedford, easy to reach from St Neots, Huntingdon, Milton Keynes and Luton.
Unit 10, Airfield Industrial Estate, Little Staughton, Bedford MK44 2BN
Call or WhatsApp 07460 752897
[email protected]
Monday to Friday 10am to 6pm
Saturday 10am to 4pm
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