- First Name
- Vincent
- Joined
- Nov 24, 2017
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- 150
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- 2,406
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- 4,819
- Location
- Las Vegas, NV
- Website
- www.27won.com
- Vehicle(s)
- 18 SI, 18 CTR, 22 Si, 23 Integra
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- #1
Hey Guys,
Recently over the last few days I have had a lot of people reach out to me about fuel trims on their aftermarket intakes both from people running a 27WON intake and other various brands. The question I get asked the most is what should my fuel trims be and what do yours look like. I want to use this post to answer the later question.
The 27WON intake comes with a 1-piece billet machined MAF housing and manufactured to tolerances that are extremely tight and well kept. The reason we utilize a separate machined housing for our MAF versus just installing a plate on to a pipe is because it allows us to keep the OEM PCM happy, ensures no obstructions in the air stream, allows flexibility in design, improve performance, looks good and oh yes it lets us keep fuel trims in check.
Now I am not going to go into the topic of fuel trims just yet has it as tons of info but I do want to share some images with you. Below you see two graphs. The top one is a log of the fuel trims taken with the OEM intake installed on a stock tune on a set route we use to help road test product. The 2nd graph below is the exact same route about 30 minutes later with the 27WON intake.
You can see that the fuel trims in both cases are super tightly held and close together. In fact they are within +/- 1.5% of each other. So in short the 27WON CAI ensures that your're fuel trims are kept in check and you get a happy car.
Let me know in the comments below if you would like to see us publish a blog that explains what fuel trim is and what to look for. As always let us know if you have any questions.
Recently over the last few days I have had a lot of people reach out to me about fuel trims on their aftermarket intakes both from people running a 27WON intake and other various brands. The question I get asked the most is what should my fuel trims be and what do yours look like. I want to use this post to answer the later question.
The 27WON intake comes with a 1-piece billet machined MAF housing and manufactured to tolerances that are extremely tight and well kept. The reason we utilize a separate machined housing for our MAF versus just installing a plate on to a pipe is because it allows us to keep the OEM PCM happy, ensures no obstructions in the air stream, allows flexibility in design, improve performance, looks good and oh yes it lets us keep fuel trims in check.
Now I am not going to go into the topic of fuel trims just yet has it as tons of info but I do want to share some images with you. Below you see two graphs. The top one is a log of the fuel trims taken with the OEM intake installed on a stock tune on a set route we use to help road test product. The 2nd graph below is the exact same route about 30 minutes later with the 27WON intake.
You can see that the fuel trims in both cases are super tightly held and close together. In fact they are within +/- 1.5% of each other. So in short the 27WON CAI ensures that your're fuel trims are kept in check and you get a happy car.
Let me know in the comments below if you would like to see us publish a blog that explains what fuel trim is and what to look for. As always let us know if you have any questions.
