tunning for more hp

Post by **mean green s14** » Mon Mar 29, 2004 3:52 pm

hey everyone, i have a 97 240 auto with a nsport stage 1 kit and have had it running for about a week now and so far im less than satisfied with the performance. for a kit that gives 240+ whp im shure having trouble keeping up with my freinds stock wrx.my car has yet to be put on the dyno and tunned but i still think i should be able to beat it at a 40-100 mph punch right?

my question is this,

can just tunning my car give me a noticable whp increase?

do you guys with turbo kits running 8psi have the same problem untile it got tunned?

by the way im running a t04b, at 8 psi

Post by **HIGHLIFE1** » Mon Mar 29, 2004 3:52 pm

i got mine dyno tuned with a SAFC 2, brought me up from 183 whp to 215. power was falling off at 4800 before tuning now peaks at about 5700. not to bad also went from 5 to 6 psi on boost...figuring about 18 hp from each psi of boost. so there was a noticeable power difference as well how much nicer it idles and reves. IMO get it tuned....saves on gas and as a bonus give you more hp

cost for the SAFC 2, install, and dyno time was about $669

J

Post by **mean green s14** » Mon Mar 29, 2004 3:52 pm

yeah ive got a safc but it hasnt been tunned yet. im running a t04b and 8 psi , do you think tunning will get me the 230-240whp im in search of?

Post by **C-Kwik** » Mon Mar 29, 2004 3:52 pm

It just depends. There are a lot of factors to consider. The condition of your motor being one of them. Also, not everyone uses the same set-up. Some run cats, some dont. Some use freer flowing exhausts. Could make a difference what kind if fuel is available to you a well. I would say minimally, do a couple of runs on the dyno to see what kind of power you are making. If it's low, looking at the curve may help you understand where the problem might be. Even better would be to make runs with a wideband hooked up. And even better would be to make adjustments between each run with a wideband to get the fuel curve right. There are no guarantees though. If your fuel map is optimal or there is an issue with your motor other than tuning that is causing a power loss, then you need to address that separately.

Post by **:: orion ::** » Mon Mar 29, 2004 3:52 pm

You need a 5-speed. The gearing is killing you.

Trust me - Been there, done that.

And a stock WRX is no slouch. A friend of mine pulled on me with a stock-ish WRX (MBC @ 15psi, no cat, otherwise stock) with me at 7psi, back when I had a JWT ECU.

- Brian

Post by **mean green s14** » Mon Mar 29, 2004 3:52 pm

well im gonna see how the dyno tunning helps, if i can get over 225 whp at 8psi ill be happy.by the way my engine has 56,000 miles and im running no cat and a 75mm apexi n1 exhuast, and going to use a safc for tunning on a wideband dyno

Post by **Structure240sx** » Mon Mar 29, 2004 3:52 pm

from a rolling start the auto isnt too bad. i didnt mind mine at all, it was over boosting a little but also losing spark up top so it kinda equaled out. does the car feel slow or are you jsut mad that the wrx can beat you?

Post by **DriFt3r** » Mon Mar 29, 2004 3:52 pm

how far did he beat you by?

Post by **mean green s14** » Mon Mar 29, 2004 3:52 pm

im not mad it beat as my car is not yet tunned im just worried that i wont be able to achieve 230-240 whp at 8psi after its tunned, i mean after my car is tunned properly i should be able to beat the wrx at a 40 mph roll pretty good right? even with the auto.

and at a 40 mph punch the wrx's driver door was even with my front bumper, my freind didnt beat me bad but its just that i thought with 8 psi i should make enough hp to beat a stock wrx pretty good!

im just hoping for 230-240 whp after i get it properly tunned?

Post by **mean green s14** » Mon Mar 29, 2004 3:52 pm

nsport claims 240hp at the wheels at 8 psi so after its tunned thats the number i hope to see.

dont get me wrong im not *****ing, the increase in hp is great but im just trying to see if anyone else got a significant increase in whp after they tunned on a wideband dyno?

as highlife said i might only be making 180-200 whp untunned,i am just wondering if tunning on a wideband dyno will give me the whp increase that will bring me to the claimed numbers

Post by **jbsr20fiend** » Mon Mar 29, 2004 3:52 pm

When you are talking about tuning it is all relative. When comparing the afc to say a power fc, there is much more you can control with the power fc. Nsports claims could very well be true with correct tuning, just the afc is somewhat limited in its tuning capability.

Post by **mean green s14** » Mon Mar 29, 2004 3:52 pm

im shure that nsports claims are very true im just saying that to get 240whp out of my car as it is now is going to be very impressive to see. as i dont think im getting anymore than 200 whp at the most now.

ill post a dyno chart as soon as i get one,i just expected more but then again its not tunned yet!

Post by **MikeMurphy** » Mon Mar 29, 2004 3:52 pm

are you running stock timing?

Post by **mean green s14** » Mon Mar 29, 2004 3:52 pm

Post by **C-Kwik** » Mon Mar 29, 2004 3:52 pm

Tuning doesn't automatically net HP. If the Tuning is pretty good now, then the gains will be minimal. If it is tuned poorly, then you might see some significant gains. It sounds like your car may be somewhat underpowered, but if the problem is something other than the tuning, then you might not see much at all. It just depends.

Post by **mean green s14** » Mon Mar 29, 2004 3:52 pm

i hear ya man

i my buddy with the wrx keeps talking trash about our race, and i just keep telling him to wait 2 weeks till its tunned then it should be a different story.

im hoping that after tunning i can back that up and show his stock wrx my taillights

Post by **HIGHLIFE1** » Mon Mar 29, 2004 3:52 pm

i think that at 8 psi and tuned properly you should be able to get 240 whp out of your car, like i said i'm only runnin 6 psi at 215 thats only 25 hp from 240. what do you have for upgraded spark, that too will help with the hp numbers.

J

Post by **mean green s14** » Mon Mar 29, 2004 3:52 pm

just the basics, im runnin bosch platnum +4 plugs with accel 8mm wires.

heve you ever raced a wrx?

Post by **erich** » Mon Mar 29, 2004 3:52 pm

Don't forget that the 240whp they quote is for a manual transmission. Autos slip a bit so you'll lose more whp.

Post by **rco8786** » Mon Mar 29, 2004 3:52 pm

those bosch plats might be hurting you...i hear they don't work well with the KA

Post by **Big Manne** » Mon Mar 29, 2004 3:52 pm

i would like to know how much tunning helps ya out man. i plan on using an auto trans also. i hope i will be happy with it when i get everything put together

Post by **hannibal** » Mon Mar 29, 2004 3:52 pm

rco8786 wrote:those bosch plats might be hurting you...i hear they don't work well with the KA

Ive heard this mentioned a couple of times. I dont understand exactly what the problem is, but this could be affecting your setup.

Post by **huguetpj** » Mon Mar 29, 2004 3:52 pm

I have the Bosch +4 plugs installed. I am having spark issues but haven't tracked it down to plugs, cables or distributor. Anyway I have purchased some IK22 Denso Iridiums and I'm just waiting for the Nology wires to come in and I'll do some testing.

Post by **HIGHLIFE1** » Mon Mar 29, 2004 3:52 pm

i have NGK plugs and i have to say they make a hell of a difference. i tried other plugs and it just didn't feel as peppy. i have a MSD digital 6 + to get better spark seems to work great for me. i would recommend getting a better spark system...better spark=better burn=more hp....pretty simple

J

Post by **nismo1003** » Mon Mar 29, 2004 3:52 pm

mean green s14 wrote:just the basics, im runnin bosch platnum +4 plugs with accel 8mm wires.

heve you ever raced a wrx?

I heard Platnum is not good for Force induction car , at least for mine car , I used it with 55 dry shot then I change it out and went with NGK 2copper 2 step colder , they are much better and I threw those plantnum away, the best I think is Irdium strongest material for spark plugs ..now I stay with Irdium ( everyone recommanded) ... the tip is just so thin , so it takes less energy to spark than copper.

Post by **C-Kwik** » Mon Mar 29, 2004 3:52 pm

Copper is better for performance due to it's higher conductivity(less resistance), but poor for long term use as it is a soft metal. Platinum and iridium are much harder materials so they last longer. They do not give any real performance benefit. They use small electrodes because these metals are more expensive, but can get away with it because it lasts longer.

As far as The Bosch +4's they ran perticularly bad on my S13. Even if I didn't have a bad experience with them, I'd be reluctant to use plugs gapped for NA on a turbo car. And Bosch +4's are preset and there is no tool available to gap them as of yet.

Post by **mean green s14** » Mon Mar 29, 2004 3:52 pm

what do you recomend for plugs and how should i gap them 8psi

Checkered-Member · Post by **Checkered-Member** » Mon Mar 29, 2004 3:52 pm

mean green s14 wrote:what do you recomend for plugs and how should i gap them 8psi

Well defiantly not platinum sparks because they are hotter then stock, they might be getting so hot that they are a source of miss fire/detonation (although you didn’t mention any problems like that), you can get Copper or Iridium heat range of 6-7, 7 being stock, right now you are probably running 8-9 which are too hot.

Post by **mean green s14** » Mon Mar 29, 2004 3:52 pm

theres a little sticker on my rad support that says to only use platnum tipped plugs?

Checkered-Member · Post by **Checkered-Member** » Mon Mar 29, 2004 3:52 pm

mean green s14 wrote:theres a little sticker on my rad support that says to only use platnum tipped plugs?

Really?…how wired in my altima the same exact KA it comes with copper plugs...

anyone else has this sticker?

tunning for more hp

tunning for more hp

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