
Don



First of all, let me start off by saying butt dyno FTL......the car didn't do what we expected it to do today. Today was a perfect example of why you NEVER go by feel after installing parts. The dynojet told the tale today, and we were disappointed. It pretty much lost torque everywhere until about 5400 rpms when it started to make gains. It also made power past the stock redline, unlike the stock car. When we get a chance, we are going to try playing with the exhaust sprocket to see if there's any more gains to be had. The sprocket is installed at 6 teeth at the moment. Turbo cars will probably still benefit from this mod because it will spool the turbo faster. The car definitely has more power up top, and it's great when you're racing.
Here's the sheet:
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Travis


too bad about no getting the gains you wanted but good for power past redline

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Don



BTW, ignore the AFR readout on the graph, the sniffer wasn't reading correctly. I'm glad I had my own wideband to use.
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Jason


thanks for being the man to try this. shitty for me being na and all, but theres always bc cams if they ever come out.
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r0nni


heh =] bc cams ftw =]
-r0nni

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Geoff


so to sum it up: overall losses until the redline. The car will still make power past 6200 rpm. Good for people that have a higher redline, but pretty much useless for those who don't/want to keep low down power and torque. Am I reading this right? Thanks again for doing this. Doing this def. takes a lot of time and money.

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Jamil


what did u do different between those runs? the gain difference between those to runs
probably u felt a gain cuz the power band looks like it's shifted uptop
Last edited by nightrider45 (2008-08-27 23:33:06)
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Geoff


i think one might have been a stock run?

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Don



nightrider45 wrote:
what did u do different between those runs? the gain difference between those to runs
The bottom run was from months ago when we dynoed the IMS. The top run was the best we could muster today. Gains in the upper rev range only, with significant torque losses below 5400 rpms.
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Jamil


donspecv02 wrote:
nightrider45 wrote:
what did u do different between those runs? the gain difference between those to runs
The bottom run was from months ago when we dynoed the IMS. The top run was the best we could muster today. Gains in the upper rev range only, with significant torque losses below 5400 rpms.
at least u gained 4 hp from it. but then again thats with the TB on right? or u guys didnt put it on?
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Geoff


hahaha... i was just thinking that doing this makes our cars more like hondas and less like nissans, in the sense that i think that a lot of us bought our cars because of the low-down torque.

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Don



nightrider45 wrote:
donspecv02 wrote:
nightrider45 wrote:
what did u do different between those runs? the gain difference between those to runs
The bottom run was from months ago when we dynoed the IMS. The top run was the best we could muster today. Gains in the upper rev range only, with significant torque losses below 5400 rpms.
at least u gained 4 hp from it. but then again thats with the TB on right? or u guys didnt put it on?
We didn't put it on, and actually, it made close to 7 whp at 6200 and maintained that all the way to 6600.
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Joe


Arent the results fairly similar to intalling JWT or Nismo cams? Dont they lose power lower in the range and gain up top as well?

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Don



PsychoZX wrote:
Arent the results fairly similar to intalling JWT or Nismo cams? Dont they lose power lower in the range and gain up top as well?
Not to this extent, JWT cams start making gains above 4k.
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Joe


Do the JWT cams lose as much torque?

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Geoff


PsychoZX wrote:
Do the JWT cams lose as much torque?
no

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Geoff


from looking at it... you might lose somewhere around 15lb of torque and 10hp down low

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Jamil


humm i'm thinking if i should lose alil low end for top end.
Last edited by nightrider45 (2008-08-27 23:46:45)
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Jamil


i was reading the other thread before the dyno and you guys advanced it? isnt it supposed to be retarted on the exhaust side to creat more over lap and On the intake side it's supposed to be advanced to have more over lap. And for n/a you would want more overlap. For f/i you would want less overlap to spool faster.
intake timing- advanced= more overlap
exaust timing- retared = more overlap
I think it's something like that.
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Allen




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Cisco Carrillo

What if your running a Nismo Intake Cam, would running the stock Intake cam in the exhaust side benefit? I ask this because on install of my Nismo Exhaust Cam, it cracked, hence could not use it. Therefore I had to put the stock exhaust cam in there. So I am wondering if putting the stock intake cam in the exhaust side could remedy this, since Nismo doesn't sell cams seperately!!!!
Cisco C.
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Doug



kind of a buzzkill for us NA guys, but props to everyone who was involved in trying this idea
1/4- 15.939 @ 88.65mph 

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Don



Cysco00 wrote:
What if your running a Nismo Intake Cam, would running the stock Intake cam in the exhaust side benefit? I ask this because on install of my Nismo Exhaust Cam, it cracked, hence could not use it. Therefore I had to put the stock exhaust cam in there. So I am wondering if putting the stock intake cam in the exhaust side could remedy this, since Nismo doesn't sell cams seperately!!!!
Cisco C.
You can certainly try it, remember to move the sprocket 5 or 6 teeth clockwise.
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Jamil


wat would happen if u dont advace it and leave it stock timming
Last edited by nightrider45 (2008-08-28 00:26:20)
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Don



nightrider45 wrote:
wat would happen if u dont advace it
The pin is on the opposite side, since it's made as an intake cam, you have to move the sprocket to return it closer to it's original position.
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Jamil


damn.. man i 'm soooo tempted to try it out with 1 nismo cam and 1 stock Intake came. I can start it right now and dyno it tomorrow but, i dont know if i wanna lose that tq and hp power from 3k to 5k rpms. but then again it might be different with the nismo in place.
decisions......
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Nick

thanks don for all youve done...to bad it didnt turn out the way we wanted it to.
He is my new pet.Online

Shaun


damnit! now i gotta call my mechanic and tell him not to put it in
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Matt Pitt


159.3(after) - 155.94(before) = 3.36 max hp gain
told you it was gonna be a 4hp gain 
this might be a cheap alternative on a spec with a raised redline, but imo, worthless on a stock car.



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Allen




The Pitt wrote:
159.3(after) - 155.94(before) = 3.36 max hp gain
told you it was gonna be a 4hp gain
this might be a cheap alternative on a spec with a raised redline, but imo, worthless on a stock car.
your jinxed it!
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Matt Pitt


illestfob wrote:
The Pitt wrote:
159.3(after) - 155.94(before) = 3.36 max hp gain
told you it was gonna be a 4hp gain
this might be a cheap alternative on a spec with a raised redline, but imo, worthless on a stock car.your jinxed it!
oh come on now. all the aftermarket exhaust cams have close-ish to the same specs as the oem intake cam. it would be like installing an aftermarket exhaust cam but not the intake side. so who would have thought that it would make similar or better results then a set of jwt's or nismo's.



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Allen




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Matt Pitt


illestfob wrote:
the butt dyno, thats who
ya the butt dyno really got results for the wiperdragon spacers too 



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Zach



My butt dyno never got gains from WRP spacers... mine must be calibrated more than most.

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Matt Pitt


my butt dyno never gave me any gains. when i took everything off all at once though, i definitely knew it got slower. im slowly gettin back into the game, not as deep as i once was though.



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Michael





matt give me your spare intake cam now.
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Matt Pitt


darsondriss wrote:
matt give me your spare intake cam now.
buy it 



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Steven C.


Does Don's car have a Aftermarket Intake cam in? Or is his car running two stock intake cams?

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Matt Pitt


spare201 wrote:
Does Don's car have a Aftermarket Intake cam in? Or is his car running two stock intake cams?
two stock intake cams



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Cisco Carrillo

nightrider45 wrote:
damn.. man i 'm soooo tempted to try it out with 1 nismo cam and 1 stock Intake came. I can start it right now and dyno it tomorrow but, i dont know if i wanna lose that tq and hp power from 3k to 5k rpms. but then again it might be different with the nismo in place.
decisions......
You mean like what I mentioned? Nismo intake cam and stock intake cam in exhaust spot? I am very interested in this as well. I may dyno this in the next month. LMK if you do it before then, I AM VERY INTERESTED!!!!
Thanks guys who all was involved in this!!
Cisco C.
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Steven C.


The Pitt wrote:
spare201 wrote:
Does Don's car have a Aftermarket Intake cam in? Or is his car running two stock intake cams?
two stock intake cams
After this Gustav passes I'm doing this, if you cam get 7whp from just changing the exhaust cam imagine if you had an AM intake cam. Even as it stands now I'd still do it.
Last edited by spare201 (2008-08-28 12:01:35)

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Chris


Im just wondering what the results would be with a NA car all the same mods only difference one has the two intake cams and one has the stock cams.... which one would pull on the other?
Seems like the loss of torque and horsepower down low and more horsepower up top might not make any difference when the regular spec cam setup will just have the extra jump before the two intake cam setup makes that extra power up top.
Might just end up evening out. I was really looking forward to this too.
Last edited by TooMuchPower (2008-08-28 12:24:01)
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Don



The Pitt wrote:
159.3(after) - 155.94(before) = 3.36 max hp gain
told you it was gonna be a 4hp gain
this might be a cheap alternative on a spec with a raised redline, but imo, worthless on a stock car.
It actually made a 7whp gain at 6200 if you look at it. There's tons of torque losses though.
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Matt Pitt


donspecv02 wrote:
The Pitt wrote:
159.3(after) - 155.94(before) = 3.36 max hp gain
told you it was gonna be a 4hp gain
this might be a cheap alternative on a spec with a raised redline, but imo, worthless on a stock car.It actually made a 7whp gain at 6200 if you look at it. There's tons of torque losses though.
7hp isnt worth it, especially cause it takes away ALOT of usable powerband on a stock redline



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Don



The Pitt wrote:
donspecv02 wrote:
The Pitt wrote:
159.3(after) - 155.94(before) = 3.36 max hp gain
told you it was gonna be a 4hp gain
this might be a cheap alternative on a spec with a raised redline, but imo, worthless on a stock car.It actually made a 7whp gain at 6200 if you look at it. There's tons of torque losses though.
7hp isnt worth it, especially cause it takes away ALOT of usable powerband on a stock redline
I'm not disputing that. I was just saying that it did make that up top. The losses in tq are only gonna make a difference in 1st gear, after that you're always above 4600-4800 rpms. The car is still really torquey. I'm gonna run it at the track on Saturday probably to see if I can improve on my previous time.
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Adam

such a bummer. i was so stoked on a free mod
but seriously, thanks don!!
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Adam



i want turbo results still anyone??
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Daniel




wonderduck wrote:
i want turbo results still anyone??
+1
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jarrett

did you guys even try with 5 teeth advanced?
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