Headers, O2 sensors, JWT ECU, & air/fuel ratio question

Post by **HeavyDuty** » Fri May 28, 2004 4:38 am

Hey Rob,

Been offline for the weekend, just got back. Can't wait to see, hear, feel the headers!

I'm sure it was worth the wait.

Gotta get to work tomorrow so I can hear it. No speakers at the house on wifey's old computer.

Stupid question:

Did you happen to count the revs on the driveshaft - wheels? On your message you said something about *not* changing the speedo gear? Or you did change the gear? (Bad connection.)

Oh to hell with it, gimme a call when you get a chance tomorrow, or I will you.

Post by **rsiwicki** » Fri May 28, 2004 4:38 am

Here is some more video of my car and its sound. I met up with Todd (1qsker) and we had a little fun. We did not video any real high speed runs, but he drove the car for a bit up to 120+ a couple of times on I-95

Nothing is better than to have another Q45 owner drive your car for you to tell you how good/bad it feels and how strong it is running. I had him drive the car while I video taped so I could hear and see my car go by as I never get to see/hear what it looks like from others prospectives....

Dennis.....you are killing me

I will do my best to find one of those type of dyno machines you are referring to. With all of your connections, do you know of a shop down here in South Florida (WestPalm to Miami) that can do what you referring to as it would make things a lot easier. I don't know what kind of dyno machine this shop has (different shop from last time) but I will ask them tomorrow. Either way....I ought to have some good 1/4 ET's on Wednesday.

And yes....Todd confirmed that I somehow got screwed on my 4.08 and that I still have my stock 3.54 gear as we called Qship and confirmed that both his and my car in "D" at 80mph is 2,500-2,600 rpms and at 50mph in 3rd @ 2,250rpms. I still have the new speedo gear for the 4.08 sitting in the glove box waiting to be installed as the mechanic could not find when I told him it was in the glove box (they only looked for it in the center console...not the glove box. Ugghh!!!! What a pain in the a$$ to get this mod done.

Ohhh and how could I forget...we saw a sweet silver new Q45 with rims/spoiler/etc....looked just like on the JDM sites...it was awesome and I found myself liking the new Q45 for the first time ever....I tried to race the guy, but he was too busy talking on his cell.

http://www.nissaninfiniticlub....1.asf

http://www.nissaninfiniticlub....2.asf

http://www.nissaninfiniticlub....3.asf

http://www.nissaninfiniticlub....4.asf

Post by **1qckser** » Fri May 28, 2004 4:38 am

IIm posting from my hotel room tv so please dont mind the mistakes, I must say that his car is just awesome, and Rob is a great guy, I thank you for taking time out of your schedule to meet me and my family, and for letting me drive your car, it was a perfect ending to a perfect vacation. See you in August. I will post more on his car and some pics tommorow.

Post by **AZhitman** » Fri May 28, 2004 4:38 am

What a blast.

Rob, the car sounds fantastic.

Todd is indeed a cool guy, ask him about the time I kept him on the phone until 4 am CT time, LOL...

Wish i coulda been there to meet you both. Proud to consider you both friends.

Post by **rsiwicki** » Fri May 28, 2004 4:38 am

Quote »Todd is indeed a cool guy, ask him about the time I kept him on the phone until 4 am CT time, LOL... [/quote]

I am not even going to ask what the heck you two were talking about till 4am!!!!

I will post more sound/video clips sometime after the 4th when I have a chance to rag out the car a little. Need to find a back road where nobody is around......I guess I am headed West to the Everglades.

Post by **QShip** » Fri May 28, 2004 4:38 am

This makes me wonder how AGM's car performs. Headers, exhaust, 4.08, stall converter, Aquamist and of course boost.

My. My. My.

Post by **elwesso** » Fri May 28, 2004 4:38 am

That is so cool Rob... Sounds pheonminal, just too bad you had to wait 5 weeks for it.....

Post by **HeavyDuty** » Fri May 28, 2004 4:38 am

rsiwicki wrote:And yes....Todd confirmed that I somehow got screwed on my 4.08 and that I still have my stock 3.54 gear as we called Qship and confirmed that both his and my car in "D" at 80mph is 2,500-2,600 rpms and at 50mph in 3rd @ 2,250rpms. I still have the new speedo gear for the 4.08 sitting in the glove box waiting to be installed as the mechanic could not find when I told him it was in the glove box (they only looked for it in the center console...not the glove box. Ugghh!!!! What a pain in the a$$ to get this mod done.

That's typical, my former tech would spend countless hours looking for something everywhere but the obvious places, I can't tell you how many times he walked in with a helpless look only for me to reach in the glovebox & hand him the elusive object.

I'm trying to make sure I'm thinking clearly here with Huey, Dewey & Louie in the background, but if the car still thinks it has the 3.5 gear, it's going to reflect it on the speedo & shift appropriately. I'm not saying you wouldn't know the diff...heh...diff, but it'll drive goofy if the speedo gear isn't corrected.

I know it's a pain, but I would get it on a lift, in neutral, mentally mark the tire relative to the ground or a body line, or the top of the fenderwell, etc. Also mark the diff yoke relative to the housing. Rotate the tire one revolution & have someone else count the number of times the driveshaft passes your marks.

One tire revolution for either 3.x driveshaft or 4 driveshaft.

Or, drive along someone with a stock normal car & compare speeds (you at 80 might reflect them at 72).

It just seems real odd that this guy would take it apart & reassemble with the stock gears. I guess you're sure it's your core you received back? I'm incluned to believe it was an honest mistake on his part, it's not something that lends itself to interpretation, you know?

Post by **rsiwicki** » Fri May 28, 2004 4:38 am

I am sure that it was an honest mistake and somehow the guy picked up the wrong gear off the bench and stuck it back in there without seeing that it was the original gear. Yes this is my original core that I sent to him as well. There is not one single piece of evidence even hinting that it might be a 4.08 or even some other gearing and last night on my way home I was pacing some little car that he a digital speedo and both of our speedo were the same....74 to my 72mph. BTW...that digital speedo in the other car was bright and big and would have drove me nuts. Also I am only getting at most 1 full wheel spin on a good launch from a dead stop and everybody else is having serious problems with wheel spin and my wheel spin is no different than it was before the addition of the headers, etc.

I am going to video some 0-100mph runs this evening as I did one this morning and the results were too good (even for me to believe, but I was moving very fast) so I need to do some more 0-100mph runs to confirm ET to 100mph. If the video camera's timer is anywhere close to accurate (with +-1.0 secs) then tomorrow at Moroso will be a very good night for the Q. I will post my 0-100mph runs tonight as well for you all to see.

Post by **HeavyDuty** » Fri May 28, 2004 4:38 am

That's so weird, sorry man.

Post by **rsiwicki** » Fri May 28, 2004 4:38 am

Okay....I could not resist and work is going to kill me, but here are four 0-100mph runs that I did today....let me know what you think.....as I got done on the last run up to 120mmph...there was a motorcycle cop on the side of the road writing somebody a ticket exactly where I had gone 100mph about 5 minutes early today during lunch....I got lucky

http://www.nissaninfiniticlub....2.asf

http://www.nissaninfiniticlub....1.asf

http://www.nissaninfiniticlub....3.asf

http://www.nissaninfiniticlub....4.asf

Post by **1992Q45A** » Fri May 28, 2004 4:38 am

That is WAY faster then a stock 94...

You have got to be in the 14s... The lower gearing is definetely helping you out

Damn, your car ROARS to 60... Once you get the 4.08 it's going to be even quicker!

Thanks for risking a ticket RSI.. these videos kick ***..

Post by **Q45tech** » Fri May 28, 2004 4:38 am

I'm impressed if you didn't edit the video.........I stopwatched ~~ 13-14 to 100 mph 18-19 secs at 120 mph.

No Nitrous? Just Level 10 and headers exhaust, ecu?

Post by **1992Q45A** » Fri May 28, 2004 4:38 am

Rob definetely does not have N2O

Doesn't look like he did any sort of special launch (brake torqueing)..

When you get that 4.08 your car is going to be smoking tires

Post by **AZhitman** » Fri May 28, 2004 4:38 am

Brake torquing is bad way to launch the Q...

Very impressive!

Post by **maxnix** » Fri May 28, 2004 4:38 am

After seeing this I wonder if the 4.08 was installed and the old cleaned speed sensor gear was replaced in the glove compartment? It begs the question, what did the tech do with the 4.08 ring and pinion gear?

Good going Rob!

Post by **1992Q45A** » Fri May 28, 2004 4:38 am

Maybe bad on components... Although with a level ten it should be able to handle it...

I agree on a non boosted car it doesn't make much difference, but it still gets the rpms up more then a standing start... might make a little difference

On a car with boost, espically turbocharged boost, it can make a significant change in ETs

Post by **maxnix** » Fri May 28, 2004 4:38 am

Brake loading heats the ATF and reduces it's efficiency. Ran across a web site where by cooling the ATF from 176° F to 140° F, there was a gain of .2 seconds in the qurter mile time, and these were near 10 second cars to start with.

Post by **rsiwicki** » Fri May 28, 2004 4:38 am

Dennis....I have got to ask?? "so are you saying that you are impressed?"

Even for me driving the car I can't believe that the speedo is accurate but I have checked just about evey way possible and all appears to be right on the money with shift points and speedo readings. The cars speedo not only says it is fast, but my "butt dyno" says it hauls a$$ also. I just got back to work and took on a Suburu WRX thingy from 60mph to 120mph and I was there all the way ahead of him by a car length pulling here and there on him as he shifted the crap out of his car trying to get it moving...I love the beauty of an automatic at times when you see others working so hard to keep up with you as all I need to do is just drop the pedal to the floor.

Here are all my mods to date....no bull$hiting or holding anything back and I did those 4 runs on the same road with 2 runs in each direction today. The road is a filled-in man made very flat causeway across the bay for 3+ miles of 3 lanes on each side that is totally flat at sea level and I did the runs from a dead stop not on any slope what-so-ever.

Eibach SpringsToicko BluesHomeDepot made RamAir Intake & K&N box filter (I will be putting on my cone K&N filter shortly after us NICO guys figure out a custom CAI kit for it)20mm rear sway barTiming set at 15 by the dealer in AprilJWT ECU92 transmission with a 93 TCU....I have not reinstalled my 95 TCU yet as the car already shifts at 7,300 and I wonder why I would by a JWT TCULevelTen transmission with 2,400 stallHeaders (mostly equal length and powder coated)Full mandrel bent exhaust 2.5" with X-pipe and dynoflow mufflers as recommended by Dennis

That is it...nothing more.

I am not running NOS as I personally think it is a cheaters way to beat another car as just about any car can add NOS at just about any shot level to beat somebody. It takes real hard earned $$, time (5+ weeks for headrs), and friends such as you NICO guys to figure out how to get my car running the best it can without using NOS and I feel really good that I did not go with NOS as I know that I would probably be going through a bottle once a week or however long that stuff lasts.

Again...I have no idea what the hell happened to the 4.08 mod as from everything we can see and test so far without getting it on a lift, it does not look like I have the mod and still the OEM diff. I am really hoping that this is true (it is not a 4.08) and if so I can't wait till I get the 4.08 mod done as the car will be just a pure monster.

Next on the list of mods is:

carbon fiber driveshaft18" wheelsbrakespaint jobsound system (lightly upgraded)

Nothing more after this as I don't think that there is much else except for a SC and I will let the others do this mod first.

No altering of the video tape either...

Post by **rsiwicki** » Fri May 28, 2004 4:38 am

I still have the 4.08 speedo gear sitting in its plastic sealed bag in my car and can video tape it tonight for any that need proof that the speedo gear was not installed....

Thanks all for your great comments and support on how fast my car is running now. It feels really good to have you all comment on how fast it is....and to hear from Dennis that he thinks my car is fast is icing on the cake

Hoping for no rain tomorrow so I get to the 1/4 track and get some good quality ET's with our NICO member FastLane. It is the rainy season so fingers are crossed.

Post by **maxnix** » Fri May 28, 2004 4:38 am

rsiwicki wrote:I still have the 4.08 speedo gear sitting in its plastic sealed bag in my car and can video tape it tonight for any that need proof that the speedo gear was not installed....

Naw, one can tell by the shift points. No wonder the gears didn't get installed!

You never mentioned them before. Don't know how the guy could miss them unless tehy left the building like Elvis.

Post by **rsiwicki** » Fri May 28, 2004 4:38 am

yeah...how the hell you build a 4.08 and forget to put in the 4.08 rearend is beyond me...maybe just a mistake....maybe just careless work. When I do the dyno run on Friday I will ask the guys to free up a lift so we can do the driveshaft vs. wheel turns test.

Dennis...Thanks for confirming my 13-14 sec 0-100mph runs as I could not believe it either when I watched the tape and timed them. I guess I know that I am in the very low 14's if not high 13's in the 1/4 mile.

I just spoke with the 4.08 builder (Kevin) and he said...yes that there is a chance that it could be a mistake and be a 3.538 gear instead of my 4.08...but the only way to tell is get it up on the lift and do the tire/driveshaft rotation test. He was surpised and thought that maybe I lost some down low torque that would not allow the wheel spins like others are getting with their 4.08, but that he was surprised that I would loose that much low end torque going with a more free flowing exhaust system.

Post by **Q45tech** » Fri May 28, 2004 4:38 am

I looks legit to me also, timing the videos with a stop watch. I've shown everyone at T3...............the 120 mph time is more confusing than the 100 mph or the 80 or 60 mph.

Post by **Q45tech** » Fri May 28, 2004 4:38 am

Your 50-80 mph time appears to be 4.2 seconds or less. That is 1.1 seconds faster than I have ever seen on a JWT ecu 90 Q [mine].

Post by **rsiwicki** » Fri May 28, 2004 4:38 am

thanks for confirming that my speedo looks accurate as well.

Just for my info ...why would the 120mph look confusing compared to the other runs that I was doing? I can do more 0-120mph if you like

if this helps at all

Yes....from 50-80mph the car is a bullet just screaming down the highway at those speeds.

Wow!!! I can't believe that I got the T3 guys attention as well. That is great and I can't wait to meet them all soon as I need a 30K checkup in the next 2-3 months and a plenum cleaning.

the car is really funny how it takes off slowly (average) and then when I hit the upper rpms (3,000+) the power is nice and strong till 7,300. Also the shifts are stonger as well with a little more snap than before which I think is from the additional power as well under WOT.

So after I do the dyno numbers and 1/4 ET's are there any T3 guys looking for a set of headers for their Q???

Post by **Q45tech** » Fri May 28, 2004 4:38 am

All of us have to do a dyno emissions test unfortunately.We found long ago that even removing the precats fails emission unless you put brand new cats on prior to annual emission test.

Post by **elwesso** » Fri May 28, 2004 4:38 am

Rob your car is so golden.. so fast...

Well worth the money brotha!! Get that 4.08 in there and youll have all power all the time...

Im surprised (honestly) how much difference the headers, JWT and exhaust made.....If I were to ever do this on my Q, i may just do the headers and a new pipe....

Your car is a true rocket!!!!! :bowdow: :bowdown:

Post by **Fastlane** » Fri May 28, 2004 4:38 am

Kicka$$.......

I'm looking forward to tomorrow....hope it doesn't rain.

Post by **HeavyDuty** » Fri May 28, 2004 4:38 am

Rob,

You motivated me to hook up the speakers on the house computer.

It was worth the effort. :pface

I'm jealous.

Post by **MiniMan** » Fri May 28, 2004 4:38 am

Rob, it's great to hear about the headers and the exhaust. The numbers sound phenominal!! I can't wait to see the track times you pull out and your dyno numbers! Lets hope you're looking at 280rwhp or more

.

You never answered me Re: the camera btw. Forward me your address and I'll send it to ya so we can all see some nice digital pics of the black beauty

. Besides it'll make me feel better when I go to get the headers and exhaust.

Corey

Headers, O2 sensors, JWT ECU, & air/fuel ratio question

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