Is it a wise idea to buy a b-swapped 6th-generation Civic?

Title. So far, everything appears quite nice, but I’m more concerned about how well the owner did with the swap.

Of course, this is because the fuel efficiency is fantastic. In normal usage, you will achieve around 47 mpg (US). I recently drove it on the Autobahn at speeds of around 95 mph and got no less than 35 mpg (US). The Yaris gets better economy in busy city traffic than on the interstate thanks to its hybrid technology. In rush hour traffic, more than 50 mpg is achievable.

Actually check the subframe for sure I got a 96 coupe not too long ago and it had a surprising amount of subframe rust despite the panels being rust free.

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Buying a B-swapped 6th-generation Civic can be a good idea if you seek improved performance and reliability in a classic chassis. However, ensure the swap is professionally done to avoid potential issues with fitment and compatibility. Weigh the cost and potential maintenance needs before making a decision.

B-swapping a 6th gen Civic is a significant modification. It requires mechanical expertise, budget, and consideration of potential legal and reliability implications.

If you’re looking for performance upgrades, explore other options like exhaust systems, intake modifications, or ECU tuning before committing to a full engine swap.

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To improve the mileage on your Honda Odyssey, monitoring fuel trims with a scan tool is a smart move. Here’s how to approach it and why replacing the O2 sensors might be beneficial:

Monitoring Fuel Trims:

  • Fuel Trims: These are the adjustments your engine’s computer makes to the air/fuel mixture. If the trims are adding 10-20% more fuel, it indicates that the engine is compensating for an issue (like a lean condition) that might not trigger a diagnostic trouble code (DTC).
  • Scan Tool: Use a scan tool to check the short-term and long-term fuel trims. Ideally, the trims should be within a range of ±5%. If they are outside this range, especially if they’re consistently positive, it means the engine is adding more fuel than expected, which can hurt fuel economy.

Replacing O2 Sensors:

  • Why Replace? Oxygen (O2) sensors play a critical role in maintaining the correct air/fuel ratio. Over time, they can degrade, leading to inaccurate readings and improper fuel delivery. This can cause the engine to run richer than necessary, lowering fuel efficiency.
  • NTK Sensors: Replacing old O2 sensors with NTK sensors from RockAuto is a cost-effective way to restore the proper function of the fuel system. NTK sensors are known for their reliability and are often comparable to OEM parts but at a lower price.

Steps to Take:

  1. Check Fuel Trims: Connect your scan tool and monitor both short-term and long-term fuel trims. If you notice significant positive adjustments, it’s time to take action.
  2. Replace O2 Sensors: If your Odyssey has high mileage or you’re experiencing poor fuel economy, replace all four O2 sensors. The sensors upstream (before the catalytic converter) and downstream (after the catalytic converter) should all be swapped to ensure balanced performance.
  3. Re-Evaluate Fuel Trims: After replacing the sensors, check the fuel trims again to see if they have normalized. This should help improve your overall gas mileage.

Additional Tips:

  • Maintenance: Regular maintenance, including air filter changes, spark plug replacements, and ensuring proper tire pressure, can also contribute to better fuel efficiency.
  • Driving Habits: Adjusting driving habits, like avoiding aggressive acceleration and maintaining steady speeds, can further improve mileage.

Following these steps should help improve your Honda Odyssey’s fuel efficiency, saving you money at the pump over time.