Looks pretty good

 

come by next week with the mesh and we'll do some work with it.

 

car is sick bro! Hope to see you at the meet on may 16th

Allan you too!

 

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Damn that sucks, hope everything works out

 

Dats that's crazy. Hopefully you can do a before and after dyno and vid the same day for ****s and giggles.

 

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Isn't it just a matter of adjusting the a/f ratio now? Can't you do that yourself?

 

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i have a few questions about the proEFI setup you are using, will this allow complete control of the VTC function? I did some research but could not find a definite yes...

 

Spec V tubing is as small as 1.5", from the factory resonator, to the muffler.. The piping shown is nowhere near 1.5", and looks nothing like the factory parts. I do not weld mufflers onto factory tubing.

I really don't want to get into another arguement, on yet another forum.. but, here are the facts:

I told Kevin that we would put a 2.5" cat-back exhaust on his car. He wanted 3", but, I could not get it at the time, to finish his project on time. The piping is 60mm, which comes out to 2.4".. It's what I have used for 5+ years, and it works just fine. It's what Apexi and Greddy use on their Spec V cat-back exhaust systems.. Another customer's built VQ swapped Spec V ran 12.29 @ 110.85mph with this SAME EXACT cat-back, and header/y-pipe combo. It is not "crap", or "garbage".. 2.4", for all intents and purposes, rounds up to 2.5", and, I highly doubt that there is going to be any major performance difference between a 60mm pipe, and a 2.5" pipe. Nevertheless, I gave Kevin a 80.00 refund a few weeks ago. He paid me for a 3" system, originally, and did not care that I was going to the smaller cat-back, at the time. I offered him a refund, at that time, and he was not concerned about it. Almost 4 years down the road, Kevin demands a refund, because his cat-back is 2.4", instead of 2.5". Kevin has also asked me to take this 60mm system back, and just "put it on another customer's car". I explained to him that I do not put used parts on vehicles. Instead, I offered him a refund for the difference between the 3" and the 2.5" system, which is what I originally offered him, 3+years ago. He accepted the offer, and I sent him a check for the difference.

The 60mm cat-back is perfectly fine for a stock VQ, and/or moderatly modded N/A VQ. This setup has been used dozens of times over, in the same application, without any issues. Kevin's VQ was stock, at the time, and has been so for over 3 years. Kevin has gone onto several Nissan sites, and called my work "garbage", and has tried to make something out of the fact that I work from home, which I have done for 5 years, after losing my building to Katrina. He has been banned from my site, and his thread has been deleted on at least one other site, because it was malicious, and considered a personal attack. Kevin has privately tried to take business from and/or bad mouth me to my customers. I have had several customers, and potential customers, send me private messages, telling me about Kevin and his unsolicited bad mouthing/sales pitches.

Kevin is also upset because he now feels like he "overpaid for his swap" (quoted from B15u.com), despite the fact that it gave him 3+ years of relatively trouble free service, and was running perfectly fine when he tore it down for his build. Our prices have dropped around 1K over the past 5 years of performing these swaps. This is due to the fact that we have sourced cheaper machine shops, we buy in bulk, and our engine sources have worked with us on pricing. In turn, I have lowered my prices and passed on the savings. I am sorry that things were more expensive back in 2006/2007, but, I shouldn't have to justify older pricing, nor, should I take heat for it. The customer had the choice to have his swap performed here, or not, and I believe that he is using any little thing that he can find, to try and attack me/my company, because of this. This is NOT an easy swap.. and it is time consuming. Anyone who has performed one of these swaps, from start to finish, will tell you the same thing. It is labor intensive, including transmission work, custom CNC'd parts, and several days worth of wiring work, to get everything working/looking proper.

I do not wish to argue, or bicker with Kevin, and I will report this thread if it gets to that point. This is all that I will say, unless I feel that something is said that is untrue and needs to be corrected.

Travis

 

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Cool, thank you. i may consider that proEFI for my setup ...if i ever get around to finishing it...

As for the exhaust size, for your displacement, you would need atleast a 2.75" setup to remove all the backpressure from the exhaust, that would make it 3" then... Some of the exhaust sizing will be dependent on the header design and collectors and merges. The more inefficient they are, then the larger the exhaust will need to be to keep from having a bottleneck.

 

The factory exhaust on a earlier VQ35DE powered Altima, is smaller than what's on your car. So, I would not consider the exhaust to be "choked". Portions of the factory y-pipe and cat-back, are as small as 2" on the factory exhaust for the VQ35DE. Borla's cat-back, for the Altima, uses a single 2 1/4" pipe, from the y-pipe, all the way until it splits, to go into 2 mufflers. Certainly Borla didn't get it wrong..


Magnaflow, also uses 2 1/4" tubing..

Greddy and Apexi both use 60mm tubing..

Cattman's y-pipe uses 2.5" tubing..

So, my thinking is in line with almost every major exhaust producer for the VQ35DE Altima. I understand that you may want a larger exhaust system, NOW, because you have a built motor, and you're trying to make more power. However, your cat-back wasn't installed on a built motor, 3+ years ago. The exhaust that I put on your car, was for a bone stock engine, with a few bolt-on's. It was perfectly adequate, and just like all of the other swaps with this exhaust, it made good power with reasonable noise levels. The fact that you now have a built motor, some 3+ years down the road, does not mean that this exhaust system is "junk". You moved up, and, your exhaust needs have changed.

Travis

 

The exhaust was for a stock engine, swapped in over 3 years ago.. 3" is overkill for a stock VQ35DE. 60mm, or 2.5" is adequate for the 240-250whp level.

 

whats mine?

 

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In my opinion a 3" exhaust will allow for more power to be produced from a built high compression motor. For NA stock 3.5, I think some have shown positive results but maybe not worlds different vs. 2.5", on a built motor from 2.1" pipe to 3", there SHOULD be a big difference, specially at 8k.

I say just move on Kgkeen, regardless of whos wrong or right, wont get anywhere with the back n forward, just make the best of what your getting now and forget the past. just my opinion.

 

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Well, like I said, I'm not here to argue with you, Kevin, or sling insults.

I never claimed that 3" would not be beneficial for your built motor. However, it is overkill on a stock engine. Your car was stock when it left here, and was fine for 3+ years.

Chris had his own header/y-pipe, and exhaust on the car when he brought it to me, halfway swapped. I finished the wiring, and got the car running for him. I do not hold dyno figures as the holy grail in terms of actual power output, because they can vary wildly. Chris ran 12'.90's @ 104-105mph in his car, which is indicative of a 235-240whp setup. IIRC, he had a Greddy catback on the car.

The QR25DE most definitely comes with a 1.5" pipe, from the resonator, all the way to the muffler. I am trying to find a pic to post up.

Also, please show me where I told you that the y-pipe was any specific size.

If you want to continue to split hairs, and make a big deal out of something trivial, then, that's your choice. I'll debate facts with you all day long, but, I'm not here to sling insults. I will deal with that if/when the opportunity presents itself.

Travis

 

I 100% agree with you.. For a stock engine, the benefits of going 3", do not outweight the gains in terms of noise and NVH. Kevin's car had a 100% stock engine when it left here.. there was no reason to go with anything bigger than what he currently has on the car. Now that his build has changed, he sould step up to a larger exhaust system. However, I fail to see how what is on the car is considered as "crappy", just because his needs have changed. I mean, if I've done something wrong here, please, let me know. Putting a 60mm (2.4") cat-back on a car, and rounding it up to 2.5", to me, is not a big deal. If I'm wrong, then please let me know. Because, pretty much everyone that I've talked to, on other forums, thinks that Kevin is being a bit absurd with this stuff.

Every aftermarket catback for the VQ35 powered Altima uses a 2.25" pipe.. Are those systems considered "crappy"? Again, I think that this is nothing more than something trivial, that Kevin is trying to blow out of proportion to make me look bad. But, whatever.. I've said all that I can say, and I'm not going to sit here and beat a dead horse.

Travis

 

60mm, IIRC.. Didn't you have a Greddy cat-back on your car?

 

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No one is disputing the fact that a 3" system will make more power, on ANY VQ.. but, most people don't care for the noise, and the gains on a stock engine aren't worth the headache for 5-7 more whp (on a stock engine). Your engine isn't stock anymore, and I understand that you need a larger exhaust system. I'm just trying to show you that using 2.25", 60mm, and/or 2.5" on a stock engine is not "choking" anything down. Our engines come from the Maxima/Altima, and as such, are compareable to those types of systems. It's not a big deal, is what I'm trying to say.. You moved up to a very radical/built engine, so, naturally, your exhaust requirements have changed. I'm not disputing that, Kevin..

Travis

 

Just for reference.. here is a stock Spec V muffler, showing who tiny the piping really is..





I don't have one on hand, but, I had someone snap a pic for me. The ID of the pipe is 1.5" or less.. The mating flange is much larger, but, the pipe itself is 1.5", plus, it's crush bent tubing, from the resonator, back to the muffler flange. I want to say it's around 1.75" at it's largest point, but, in the crush bends, it easily necks down to 1.5", as well.

I think this pretty much disproves the accusation that I used stock piping, and welded on a muffler. I just wanted to clear that up..

Travis

 

besides all the blah blah he says she says... throw some 3" exhaust on it and see what else she pulls out of it...

 

Exactly.. lol.. I hate arguing on the damn internet, but, it's tough not to respond when you're being accused of bogus stuff.

Finish your car, Kevin.. and go enjoy it.. I'm tired of arguing!

Travis

 

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Whatever, Kevin.. I've already proven that your accusations are BS, and you're right.. nothing more needs to be said over the internet. I've offered you a face to face opportunity, when Barry's car is finished, but, you don't want to have anything to do with me? I never said that I was coming down there to beat you up, Kevin.. But, if you are man enough to sit behind your keyboard, and talk all this smack.. then, at least be man enough to talk with me face to face. If we can't work things out, then, we're no worse off than what we were before. I've tried just about everything else that I can think of to make peace with you.

At any rate.. I will leave this thread alone so that these folks don't have to sit here and watch this stupid bullsh*t. Good luck with your car, and let me know when you want to line it up with Barry's car.

Travis

 

Just reviving the ITB work and new e-85 flex fuel setup we're using. Everyone asked so it's out there to check it out!

 

kevin hit me up

 

Result! Result! Result!