Rev limiter? WOT restriction?

babbagandu · 06-28-2012, 11:23 AM

I'm getting an uprev tune next week. I want to ask them to increase the rev limiter as well. How high can I go safely??

Also I saw on the uprev site that it can also remove the limits on wide open throttle. Do we have this on the 370?

6MT · 06-28-2012, 11:29 AM

I had my limit raised to 8200. But really, who's going there?

MattP725 · 06-28-2012, 11:40 AM

No true power gains after redline... risk of engine failure for no added benefit.

6MT · 06-28-2012, 11:43 AM

Quote:

Originally Posted by MattP725

No true power gains after redline... risk of engine failure for no added benefit.

I agree, mostly. On my dyno plot there was a noticable up-turn in H.P. after 7800. But the test ended there. My tuner also noticed it and asked me if I wanted to see where it would go at revs above 8k.

Long story short... I didn't have the balls for it.

DR_ · 06-28-2012, 12:37 PM

A friend of mine raised his redline and the engine started to knock 6 months later. He was hell bent on getting it fixed under warranty as he though it wasn't because of what he had did. He took all the mods off his car and took it to the dealer and the engine was replaced under warranty. Personally I think it was because he raised the redline and I think it was crappy of him to not take responsibility for it.

So, is it really worth it??

SS_Firehawk · 06-28-2012, 12:40 PM

Definitely need a lot of breather mods to make power that high. Stock exhaust and intakes will clamp any gains.

MattP725 · 06-28-2012, 01:47 PM

I'll rephrase... in my instance there was no notable gain after redline and I have everything but an intake manifold and headers.

'10Anamoly · 06-28-2012, 02:24 PM

I wouldnt raise your redline, just keep in in the powerband and rock n roll.

'10Anamoly · 06-28-2012, 02:49 PM

I wouldnt raise your redline, just keep in in the powerband and rock n roll.

7500rpm is plenty for a long stroke V6.

SS_Firehawk · 06-28-2012, 03:06 PM

Quote:

Originally Posted by MattP725

I'll rephrase... in my instance there was no notable gain after redline and I have everything but an intake manifold and headers.

Intake Manifold will most likely lower any potential gains up top based on information available. Headers on the other hand will most definitely help.

MattP725 · 06-28-2012, 03:28 PM

Quote:

Originally Posted by SS_Firehawk

Intake Manifold will most likely lower any potential gains up top based on information available. Headers on the other hand will most definitely help.

No plans to do either... the $$$ per HP is just too high.

babbagandu · 06-28-2012, 03:58 PM

Thanks for the replies. I will not touch the redline lol. As for the WOT restriction, I assume we don't have that on the 370?

seymore4 · 06-29-2012, 11:29 AM

Where are you getting tuned at? There isn't a wot restriction as bad as the 350z's or titans, but it's still there. You can increase responsiveness by manipulating the throttle control tables in Osiris, but not all shops do it

03g35coupe6mt · 06-29-2012, 11:35 AM

Dont forget fan control !

babbagandu · 06-29-2012, 12:28 PM

Quote:

Originally Posted by seymore4

Where are you getting tuned at? There isn't a wot restriction as bad as the 350z's or titans, but it's still there. You can increase responsiveness by manipulating the throttle control tables in Osiris, but not all shops do it

getting tuned at Z1 motorsports

Quote:

Originally Posted by 03g35coupe6mt

Dont forget fan control !

Thanks, I will make sure to ask them about that

06-28-2012, 11:23 AM	#1 (permalink)
babbagandu Enthusiast Member Join Date: Mar 2011 Location: US Posts: 349 Drives: 09 Nismo Rep Power: 14	Rev limiter? WOT restriction? I'm getting an uprev tune next week. I want to ask them to increase the rev limiter as well. How high can I go safely?? Also I saw on the uprev site that it can also remove the limits on wide open throttle. Do we have this on the 370?

06-28-2012, 11:29 AM	#2 (permalink)
6MT A True Z Fanatic Join Date: May 2009 Location: ITU Zone 2 Posts: 22,459 Drives: Reliant Robin Rep Power: 1789	I had my limit raised to 8200. But really, who's going there? __________________ Andrew 2009 370Z Sport/Touring 6MT sold 2013 Honda Civic Si coupe D/D

06-28-2012, 12:40 PM	#6 (permalink)
SS_Firehawk Premium Member Join Date: Oct 2011 Location: Tampa Posts: 4,142 Drives: 13' Magma Red Nismo Rep Power: 7334	Definitely need a lot of breather mods to make power that high. Stock exhaust and intakes will clamp any gains. __________________ Old Car:GTM TSC'd 550whp / 410lbft tq @ 11.88PSI New Car: Under Construction

06-28-2012, 02:24 PM	#8 (permalink)
'10Anamoly Track Member Join Date: May 2010 Location: GA Posts: 882 Drives: 2010 370Z BS M6 Rep Power: 15	I wouldnt raise your redline, just keep in in the powerband and rock n roll. __________________ 2013 Ford Mustang GT 374rwhp, 360rwtq SAE / GT500 Axle-Backs / Brembo Pack / Track Pack / Recaros / 6spd

06-28-2012, 02:49 PM	#9 (permalink)
'10Anamoly Track Member Join Date: May 2010 Location: GA Posts: 882 Drives: 2010 370Z BS M6 Rep Power: 15	I wouldnt raise your redline, just keep in in the powerband and rock n roll. 7500rpm is plenty for a long stroke V6. __________________ 2013 Ford Mustang GT 374rwhp, 360rwtq SAE / GT500 Axle-Backs / Brembo Pack / Track Pack / Recaros / 6spd

06-28-2012, 11:40 AM	#3 (permalink)
MattP725 A True Z Fanatic Join Date: May 2011 Location: Toms River, NJ Posts: 1,904 Drives: 2010 40th Rep Power: 16	No true power gains after redline... risk of engine failure for no added benefit.

06-28-2012, 12:37 PM	#5 (permalink)
DR_ Track Member Join Date: Jul 2009 Location: Dallas Posts: 981 Drives: Touring/Sport M6 PG Rep Power: 16	A friend of mine raised his redline and the engine started to knock 6 months later. He was hell bent on getting it fixed under warranty as he though it wasn't because of what he had did. He took all the mods off his car and took it to the dealer and the engine was replaced under warranty. Personally I think it was because he raised the redline and I think it was crappy of him to not take responsibility for it. So, is it really worth it??

06-28-2012, 01:47 PM	#7 (permalink)
MattP725 A True Z Fanatic Join Date: May 2011 Location: Toms River, NJ Posts: 1,904 Drives: 2010 40th Rep Power: 16	I'll rephrase... in my instance there was no notable gain after redline and I have everything but an intake manifold and headers.

06-28-2012, 03:58 PM	#12 (permalink)
babbagandu Enthusiast Member Join Date: Mar 2011 Location: US Posts: 349 Drives: 09 Nismo Rep Power: 14	Thanks for the replies. I will not touch the redline lol. As for the WOT restriction, I assume we don't have that on the 370?

06-29-2012, 11:29 AM	#13 (permalink)
seymore4 Track Member Join Date: Nov 2010 Location: West coast Age: 41 Posts: 555 Drives: 2010 nismo Rep Power: 6726	Where are you getting tuned at? There isn't a wot restriction as bad as the 350z's or titans, but it's still there. You can increase responsiveness by manipulating the throttle control tables in Osiris, but not all shops do it

06-29-2012, 11:35 AM	#14 (permalink)
03g35coupe6mt Base Member Join Date: Aug 2010 Location: East Stroudsburg Pa Posts: 183 Drives: 2010 Z / 2003 G35cp Rep Power: 14	Dont forget fan control !

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