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Old 04-28-2017, 08:22 PM   #1
Slimssousa
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Question NA B230 mods?

Got a NA 740 and is straight piped with a high flow cat and a K&N air filter. Any good ideas for a little bit more power ?
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Old 04-28-2017, 08:59 PM   #2
James10952001
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Camshaft is probably your biggest potential source.

I'm not a fan of those K&N filters personally, they do a lousy job of filtering and it's debatable if there is any performance benefit. The stock Volvo air filters are HUGE and flow well, and they do a good job of cleaning the air. Worn rings and bores from dirt and dust in the oil are not going to help you get more power.
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Old 04-28-2017, 09:05 PM   #3
John V, outside agitator
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Quote:
Originally Posted by Slimssousa View Post
Got a NA 740 and is straight piped with a high flow cat and a K&N air filter. Any good ideas for a little bit more power ?
Compression,
camshaft,
carburetion aka fuel
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Old 05-19-2017, 01:40 PM   #4
Drenman
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Quote:
Originally Posted by James10952001 View Post
Camshaft is probably your biggest potential source.

I'm not a fan of those K&N filters personally, they do a lousy job of filtering and it's debatable if there is any performance benefit. The stock Volvo air filters are HUGE and flow well, and they do a good job of cleaning the air. Worn rings and bores from dirt and dust in the oil are not going to help you get more power.
This. Ditch the K&N, now the stock K&N reusable filter for the stock airbox, yeah...I've heard people rave about them... I'm cautiously optimistic, but it's not on my top of my list. Someone else will buy it, trust me.

I have a VX cam(IPD) NA 940, with a lot of steering/suspension parts, the handling is awesome, but it needs some love to get it really going.

I'd love to DOHC this car, but if I got that far, I'd have a whole motor most likely as I'm a cheap bastard, and sorta poor (for the U.S.) so I'd rebuild it and turbo it.... squirts, etc.
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