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<blockquote data-quote="Izso" data-source="post: 1063800782" data-attributes="member: 2429"><p>The reason why you lost a drag against the Saga BLM 1.3 auto is because Myvi auto gear ratios are ridiculously long la! Unless you shift it into "2" and redline your rev and then only shift it into "D" you won't win in a straight out drag. BLM auto gears are closer and shorter. They aren't top speed machines but look at Myvi, 170km/h still possible even though highly unstable due to bodyshape.</p><p></p><p>4-2-1 or 4-1 on a Myvi is pointless. The original piping is 4-1 and it's not about 4-1 or 4-2-1, it's about tuned length and how that affects performance. Myvi's engine bay and car length makes it very impractical to make a properly tuned 4-2-1 header. So people who claim theirs is a 4-2-1 is probably true but the effect of having a 4-2-1 won't be that much apart to a properly designed 4-1.</p><p></p><p>You want more power? Swap to manual. </p><p></p><p>You can't port and polish a Myvi because the intake manifold is made of plastic. Instead, try to get a custom made intake manifold and consider a 4-throttle setup. Get a bigger fuel pump and a piggyback / standalone ECU to control the A/F. Get a better suspension and upgrade your brakes. </p><p></p><p>Or just buy the Myvi 1.5L engine, stroke it and pnp into your Myvi. Cheaper and most likely safer than K3VET swap (and definitely less hassle). </p><p></p><p>Or just leave that Myvi alone and buy a 2nd hand RX7 for 70 to 80k. Then you can wipe the floor with the BLM with twin turbo ROTARY POWAHHHHHHH</p></blockquote><p></p>
[QUOTE="Izso, post: 1063800782, member: 2429"] The reason why you lost a drag against the Saga BLM 1.3 auto is because Myvi auto gear ratios are ridiculously long la! Unless you shift it into "2" and redline your rev and then only shift it into "D" you won't win in a straight out drag. BLM auto gears are closer and shorter. They aren't top speed machines but look at Myvi, 170km/h still possible even though highly unstable due to bodyshape. 4-2-1 or 4-1 on a Myvi is pointless. The original piping is 4-1 and it's not about 4-1 or 4-2-1, it's about tuned length and how that affects performance. Myvi's engine bay and car length makes it very impractical to make a properly tuned 4-2-1 header. So people who claim theirs is a 4-2-1 is probably true but the effect of having a 4-2-1 won't be that much apart to a properly designed 4-1. You want more power? Swap to manual. You can't port and polish a Myvi because the intake manifold is made of plastic. Instead, try to get a custom made intake manifold and consider a 4-throttle setup. Get a bigger fuel pump and a piggyback / standalone ECU to control the A/F. Get a better suspension and upgrade your brakes. Or just buy the Myvi 1.5L engine, stroke it and pnp into your Myvi. Cheaper and most likely safer than K3VET swap (and definitely less hassle). Or just leave that Myvi alone and buy a 2nd hand RX7 for 70 to 80k. Then you can wipe the floor with the BLM with twin turbo ROTARY POWAHHHHHHH [/QUOTE]
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