I used the search, but couldnt find any satisfactory answer to my question: Can the rev limiter on our car, (which i believe is a fuel cut-off) be removed without a full stand-alone? I believe this engine has more to offer on the high rpms, because 6500 rpms is too low for redline. I find myself kissing redline fuel cut off too often, as the engine keeps pulling strong for me, then bumping hard against the cut off. I won't be doing this every day, i'm not looking to destroy the engine, but just once in a while when I race. I think even another 500rpm before cut off could be highly beneficial
Removing the Rev limiter
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EdsLex
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mikefate said:
It does not. You would need an INJECTOR DRIVEN computer to raise your redline. The Revlimiter is a fuel cut off. You need a computer that directly controls your injectors or you will not be able to remove the rev limit. Tsoprano, PLEASE O PLEASE explain how a revspeed meter will remove the rev limiter rather than making blatantly wrong statements.
The reason the Emangle ultimate can remove the limiter is because of its direct injector control. THis is the reason standalones can do it too and the reason regular piggy backs cannot.
In my opinion, for boost a higher rev limit is DIRELY needed. 6500 or so is a joke.
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So it is safe to raise the rpm's on stock internals and stock compression?
http://www.transonicracinginnovations.com/myIS/dyno/hpandtorque.JPG dyno of my stock (other than the EMU, and joe Z sytle intake) w/ raised rev limit. been beating on it so far for 6 months w/ out a problem 
edit should mention this is on a mustang dyno in 3rd gear!
edit should mention this is on a mustang dyno in 3rd gear!
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First have your car dynoed at a dynomometer facility. See what your power band looks like. When you are accelerating you want your engine speed to go only as high as peak horsepower. Any further past peak horsepower rpm and you are losing time. Once you have reached peak horsepower engine speek then shift so it will bring you back down to peak torque engine speed. Keep doing until in highest gear that is relavent at the time. Once you are in highest gear you can go past peak horsepower engine speed to keep the vehicle in that gear. Only time you will continue to gain vehicle speek past peak horsepower engine speed is when you are in top gear. Shifting later than peak horsepower will not do any good. Why try to accelerate when you are losing power.
Just a thought
Just a thought
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As a few people have pointed out...the Emanage Ultimate works great for increasing the rev limit. The raised rev limit is seemless and easily tunable in the software.
For N/A, there is no real point though unless you have other breathing mods..i.e. I/H/E. IMO..the header is critical to taking advantage of the higher rpm as it really increases top end VE making the higher rev limit useful. I have had the EMU installed for about 2 months now (thanks fstrnldr!) and it's been working great! Can't wait to get to the drag strip and especially the autox where the extra rev limit can help on those slightly longer strights where you don't have enough room to reach for the next gear but still are kissing the rev limit.
For N/A, there is no real point though unless you have other breathing mods..i.e. I/H/E. IMO..the header is critical to taking advantage of the higher rpm as it really increases top end VE making the higher rev limit useful. I have had the EMU installed for about 2 months now (thanks fstrnldr!) and it's been working great! Can't wait to get to the drag strip and especially the autox where the extra rev limit can help on those slightly longer strights where you don't have enough room to reach for the next gear but still are kissing the rev limit.
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wrong.yellowneck said:
you try to get the point where you shift you have the majority of power available. generally this will put peak power in the middle of acceleration of a gear. if you shift AT peak power you drop too far out of power and are not utilizing both sides of the slope.
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yellowneck = pwnedIS_Dude said:
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I currently have or had the stock redline. I remover THE SPEED LIMITER WITH THE RSM. Mike, the PCS ems, will not at this time remove the rev. limiter, or even allow your to raise it.
I will be raising my rev limit to around 7500-7700. It is not safe to go above 7k without some head work, such as valve springs, retainers, clips etc... with that, 7500 is reasonable and highly beneficial to a turbo. If you look at my old dyno sheet, my power curve still wants to go up.. it does not dip at all. with the extra 1000rpm an upshift will almost feel like a damn downshift. see below
![Image]()
I will be raising my rev limit to around 7500-7700. It is not safe to go above 7k without some head work, such as valve springs, retainers, clips etc... with that, 7500 is reasonable and highly beneficial to a turbo. If you look at my old dyno sheet, my power curve still wants to go up.. it does not dip at all. with the extra 1000rpm an upshift will almost feel like a damn downshift. see below
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what headwork are you getting done?
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How do u plan on raising ur rev limiter?
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Well then your gonna need to get rid of that GT35r if u wanna go for real power. I figure ur probably gonna go like AEM since lance has the hook up on PnP harnesses now. -B
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IS300luver said:
I dont get why some people say that...
gt35R is good to 600 hp....
read below right form garret
http://www.turbobygarrett.com/turbobygarrett/catelog/Turbochargers/GT35/GT3582R_714568_2.htm
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The thing with that is u said real power. I think it would best if you changed but it is your car. You have to push the gt35r more than you would a bigger turbo and you could make the same power numbers with less boost. -B
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The 67 doesn't have bad spool either. -B
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IS300luver said:![Image]()
The 67 doesn't have bad spool either. -B
I agree.. The 67 spools in the 3's and that bitch FLOWS!! I will put the 67 up against a 35 anyday of the week. It will make MORE power at the same PSI and not to mention its efficiency will eat the 35 alive.
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how is that R154 holding up? Im thinkin of doing it very very soon.
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Malekreza11 said:
I wholeheartedly agree with you M...
I look forward to running myis300t for some friendly highway runs come the spring/summer when both our cars are completed with their new upgrades...
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