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What is the "correct" way to go for 380whp?

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Old Oct 11, 2006 | 02:25 AM
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Default What is the "correct" way to go for 380whp?

I am running the turbonetics kit for the G right now and I just want to add UTEC for extra safety. I've been thinking hard about adding new injectors or go with a return fuel system and I wanted to hear some advices on what step to take. Is UTEC not enough for around 380whp?
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Old Oct 11, 2006 | 05:21 AM
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Originally Posted by in2therain3
I am running the turbonetics kit for the G right now and I just want to add UTEC for extra safety. I've been thinking hard about adding new injectors or go with a return fuel system and I wanted to hear some advices on what step to take. Is UTEC not enough for around 380whp?

whoa. lol. hold on there buddy. Start researching

you should be able to make that power on the reflash without larger injectors than the TN kit comes with, simply by throwing on a plenum spacer and exhaust.
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Old Oct 11, 2006 | 05:21 AM
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^ Werd. Also, a good tuner should be able to easily get you to 380whp with a good ems like utec. There are a few guys who have done exactly that on this forum. Hope you have a good exhaust system as well. A fuel system is never a bad idea, but you probably also don't need to go extreme with the injectors as your goals are fairly low.
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Old Oct 11, 2006 | 07:37 AM
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Originally Posted by in2therain3
I am running the turbonetics kit for the G right now and I just want to add UTEC for extra safety. I've been thinking hard about adding new injectors or go with a return fuel system and I wanted to hear some advices on what step to take. Is UTEC not enough for around 380whp?
The stock kit is all you need to run 380rwhp relatively safely. Besides a great tune, just make sure your coolant is alway fulls, check your oil every weekend, and you always get gas from a reliable source.
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Old Oct 11, 2006 | 07:44 AM
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I hit 392whp/392ft/lbs on a standard TN flash, 80mm single exhaust and a Crawford Plenum, the car hauled butt....it also ran low 12's A/F and had slight detonation 1/2 the time
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Old Oct 11, 2006 | 07:54 AM
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Hopefully the OP would like to know this as well (pertains to details on the question at hand).

Has anyone here NOT messed with their REV limiter when going F/I ?

This question is for the 350+ rwhp crowd (nothing over 380 rwhp so basically stock boost).

Obviously anything can go wrong ... but I would think raising your REV limiter would be one of the main reasons for engine failure.
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Old Oct 11, 2006 | 09:01 AM
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unless you specifically tell TN to raise the rev limiter, they won't.

I'm still on stock rev limiter.

a higher rev limiter won't necessarily bend the rods, on the non-revups it's more likely to snap the rod bolts.
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Old Oct 11, 2006 | 09:26 AM
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Originally Posted by chimmike
unless you specifically tell TN to raise the rev limiter, they won't.

I'm still on stock rev limiter.

a higher rev limiter won't necessarily bend the rods, on the non-revups it's more likely to snap the rod bolts.
I guess the only downside, which I don't mind, is you don't stay in 1st or 2nd very long.

btw: what are you putting down to the wheels ? @ what boost level?

Last edited by dutchboy350Z; Oct 11, 2006 at 09:29 AM.
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Old Oct 11, 2006 | 09:27 AM
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so the utec provides a more efficient management for the engine than the ecu thus generating a safer setup? correct?
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Old Oct 11, 2006 | 09:54 AM
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if the goal is 360-380rwhp, the tn reflash would be fine, i mean that's what they r&d it at with stock motor.......you can always get an em and fine tune it of course, nothing wrong with that.........
the tn reflash, w/af and boost guages are good enough for me for my 380rwhp goal......i'm installing a water/meth kit for added safety......reliability is more important to me than bragging rights.......this my version of what a correct set should be......hope this helps.......
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Old Oct 11, 2006 | 10:01 AM
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Default 1/2" md plenum spacer and underdrive pulley.....

Originally Posted by chimmike
you should be able to make that power on the reflash without larger injectors than the TN kit comes with, simply by throwing on a plenum spacer and exhaust.
ok, i "should" be making a little more because i currently have these two installed....however, i'll be with the oem exhaust.......will these things add up to about a wash on my 04 sedan 6mt?
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Old Oct 11, 2006 | 10:05 AM
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on a lower-reading dyno I made 371whp and 379ft-lbs on the reflash with Nismo exhaust and a 5/16" plenum spacer, with an 11:1 afr.......ran mid 12s in the mid 110s with the setup.
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Old Oct 11, 2006 | 10:06 AM
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Originally Posted by znot
ok, i "should" be making a little more because i currently have these two installed....however, i'll be with the oem exhaust.......will these things add up to about a wash on my 04 sedan 6mt?

I would not run stock exhaust on any forced induction. It's far too restrictive.
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Old Oct 11, 2006 | 10:18 AM
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you're right up there with the hp numbers and the tq is high( a good thing)
oem exhaust with f/i=not good........noted........thanks.
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Old Oct 11, 2006 | 09:32 PM
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I have a greddy evo II exhaust with a custom reverse Y-pipe with the exhaust. I know TN flash is very capable of 380whp.. I actually did make around 340whp with around 7.5 psi. I also don't like fuel running rich at around 10.4 near redline. I also don't like my idle going rough sometimes (usually when it is hot AF's going from 18-20 at idle). As for supporting mods, I am running the exhaust and AAM plenum spacer. I guess UTEC is just what I need for extra added safety
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Old Oct 11, 2006 | 10:31 PM
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UTEC when properly tuned will definetly make your car run better, if your budget doesn't allow for a full standalone unit. Let me know if you need a qoute. Good luck!

-George
GT Motorsports
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Old Oct 11, 2006 | 11:15 PM
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I forgot to say but I am also looking for better gas mileage than the reflash. I already have some store credit at AAM so I will be getting it from them but thanks for the offer GTM!

Anyways, I do have a question. I am pretty positive on this but if I get the UTEC tuned, is one tuning session enough for the whole year througout the major seasonal changes? Just wanted to make sure
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Old Oct 12, 2006 | 05:17 AM
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Originally Posted by in2therain3
I forgot to say but I am also looking for better gas mileage than the reflash. I already have some store credit at AAM so I will be getting it from them but thanks for the offer GTM!
I get good gas mileage, but if you're concerned about mpg's, you shouldn't be going turbo at all.
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Old Oct 12, 2006 | 10:17 AM
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I don't think by going turbo = bad gas milage.. if your not boosting then your not making more power and if it retains the stock ecu map.. gas milage retains the same.. Im running the TN kit and i did not notice any change in gas milage.
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Old Oct 12, 2006 | 11:11 AM
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Well.. the tn kit is flashed by the ecu and I do have a wideband so I can clearly see that the gas mileage can be improved thus going with utec.
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