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  #1  
Old 03-16-2009, 07:02 PM
Johnybeas Johnybeas is offline
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Redline limits

I understand that in LAN's tcu chip he changes the rev limits on the stock system. I wanted to open this topic up for discussion basically to see what all the educated and experienced guys think.

The questions I offer up are:
Is this good for the motor? If using a manual transmission and a stand alone would it be wise or beneficial to raise the red line? If so what would be a good general limit? What can the motor handle safely without heavy modification.
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Old 03-16-2009, 07:24 PM
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Re: Redline limits

From what I've seen the engine's powerband (stock) drops quite sharply upwards of 6000 RPM, so there's really no reason to be screaming it at 7000+, you're just putting yourself into danger territory regarding the bottom end bearings.
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Old 03-17-2009, 09:19 AM
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Re: Redline limits

Even with a standalone ECU, very free breathing exhaust and intake systems, the stock engine (e.g., cams/headwork) is peaked out at around 5500 rpms. It tapers off after that and by 6500 rpms it's ALL done making respectable power. I see no reason to be revving it much higher than that.
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Old 03-19-2009, 08:43 AM
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Re: Redline limits

The only time pushing to 7000 becomes an issue is when you are trying to avoid an extra shift. I used to be able to carry 3rd all the way down the No-Name Straight at Lime Rock, going up to about 7200 rpm. The last time I drove there I was faster out of the Esses and had to shift anyway. Heading toward the toe of the boot at Watkins Glen is the same deal. The first couple of times I drove there, I would hold 3rd into the toe. The last time I had to shift anyway. If you are going to have to shift, getting it over at 6000 rpm is good. If holding to 7000 enables you to aviod shifting then you should do that.
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