My car is the loud one. I thought it was more in the middle. Infamous said my car is loud and my family knows when I arrive. Infamous's car had a CNT exhaust and it was way quiet. That has big resonators, mufflers, and hemholtz resonators. With five total Fi'd objects spinning in such a small area, we just might create a black hole

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Haha...I'm totally straight piped so time travel is a definitely a possibility :-)

Oh well, what a nice read, never ever seen any build thread so well organised! Still a lot more to go through.

I've also ordered the same kit from GTM about 4 weeks ago, looking forward to getting it delivered so I can crack on with the fitting. Man, I can't wait!

Thanks for the comments :tup: I try to keep most of the meat on the first page. I'm glad to see another taking the dive for the kit! The price is a hard pill to swallow looking at everything there is on the market, but this is the best there is for anyone going SC'd. This is also the only option for LTH's. I'll be looking forward to your build :yum:

W00T!!! I love tax season. Uncle Sam is paying me back $12,600 in taxes. Now can give poor Phunk the money I owe him lol. He's been beyond patient with me. I'm also due for tires, my wear markers came quick after boost. Like most, my rears are worn more than my fronts.

It also looks like I'll be in PHX for about a year. This means I need to find a cheap and reliable $hit box that sips gas to drive on the daily.

Edit: Also updated my hyperlinks at the top of my journal to include initial and final reviews of my GTM TSC kit. I waited a while before I made my final review so it would encompass any troubles I might have come across with it... which I did, and how GTM handled it... which they did.

Wife told me I was rubbing off on her. She took my car out and got to the McCarren airport tunnel. She rolled the windows down and mashed it, smiled, and laughed at herself. Even she can't resist the urge lol.

Pic below: My garage has that too... :driving:

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Glad you both are enjoying this beast! Haha I say I'm marking my territory when I leave those marks.

Well, the dyno confirmed my thoughts. This car is not even close to making 550whp. On a Dynojet, it didn't make over 350whp. I'm going to do some light throttle logging in the morning. It just didn't seem like it did when I picked it up. Then looking at other peoples vids making "less" power than mine really got me thinking. I was trying to get the AF showing, but it's late. I just want to go to sleep.

http://www.the370z.com/members/ss_fi...ppointment.jpg

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That's odd it would lose so much power like that. Hope you get it figured out quickly.

Was GTM the source of the 550/410 numbers and this is the first independent test?

Do you have another map on there it could have been switched to by accident?

It has two maps, but that's beyong mild and aggressive. The highest one was with meth. I had issues last year on A Mustang dyno. I can link that too

Yeah. That's not going to account for that kind of difference. Any trap speeds to verify GTMs claimed numbers? Something's way off on that tune.

Nothing. I'm way too busy to do anything atm. I messaged Seb a few days ago. He wanted proof it needed a tune. This is definitely proof.

I decided to try my resonator on my Y pipe. It's a bit louder than my CAT, drones a tad bit more, and has a more aggressive tone. I'm sending my logging and dyno info to SEB and Uprev for opinions as well. Today though, the car felt it had a lot more power. I had a passanger and a full tank of gas and 2nd broke loose around 3500-4krpm which I thought was interesting. Not sure why the power difference, but the only change was from CAT to resonator.

I called GTM and spoke to Sam today. Literally one ring. He remembered me instantly and was happy to help me troubleshoot. I told him my power numbers and he agreed something is wrong. He asked for boost info but didn't have. So he's sending me some info on getting some more monitoring on my car. I agreed that I definitely need some way to monitor it. I'll update on my plan.

With two blowers, you might be maxing out the MAF's, even if you have wider diameter intakes and corrections dialed in.

Check MAF voltage -- if you are hitting or just skirting 5v, that might be the issue.

I'll have to look at the logs. I don't think that's the case though, those intake tubes are 3" at the maf.
I'm suspecting a boost leak somewhere.

Very possible -- do you have a boost gauge? Any weird hisses?

Another possibility is the IC isn't optimal -- can you log post IC air temps?

Looking at my MAF logs, one side maxes out at 4.7 (B1), the other at 3.8 (B2).
When the MAF GM/S reads 268.9, thats when the above readings occur. One side is always higher than the other. Not sure if that is an indicator.
AF-CORR looks the same on both sides, again... No clue if that tells me anything.
Intake temps were mostly between 75 and 85 on a 60 degree morning. It rose up to 110 at an extended stop. Huighest temps in motion were about 97F when running it to redline at around 90-93 mph.
Coolant temps reached up to 204, but stayed mostly around 180. Same with the oil temps.

I'm dropping my car off Sunday to JENZ's house so her bf can bring it to work with him to do a boost leak test, compression test and test how much boost it's making. I'm thankful he could help me out as I keep going out of town and don't have time to take it myself. Once I have these results, I'm hoping it tells me the culprit so I can fix it, strap it down and see if it is taken care of and see if the car gains back this missing 200whp lol. If it doesn't, then the question become, does it need a tune or is it tapped out as is?

I have the logs if you or anyone wants to look. I can email them if you pm me your info.

I have a feeling its due to nearly maxing out the one MAF (on a cool night, I am sure you see about 5v) while the other is measuring a much lower voltage -- they shouldn't be that far apart. I'm not sure how the ECU interpolates the values between MAF's, but that could very well be it.

AF-CORR is probably just the fuel trim, so if they aren't too high and about the same for each bank, that's good.

Post IC temps sounds good, coolant sounds fine, I'm guessing oil is fine, so other than a boost leak or an undersized IC causing blowback, my money is on the nearly maxed MAF.

The only other thing I can think of is that if you have OEM VVEL dialed in, there may be need to be some adjustments to better accommodate the extra air mass -- too much overlap will blow the mixture right out before achieving peak torque; too little will cause blowback.

Good luck!

How is AF correction nearly the same between banks even though the MAF voltages are so far off?

Not sure. I can send the referenced file. I wouldn't let me upload it here lol. Unsupported format.

I couldn't open it at work anyway. That was just my first thought when I saw your post. If the MAF sees that much more voltage/airflow, how in the world would you have similar fuel trims across banks? That screams "problem" to me.

I finally evened my debt for Phunks road race pump. he was super patient with me and I'm grateful for that. Woot!

Car broke giving Hotrodz a ride just as I was explaining my lack of power. More details in a bit. Accessory belt is destroyed, no power steering, alternator not spinning and the pulley squeals, the passenger side SC is nearly unspinnable compared to the driver side (spins easy). Jenz and her BF are helping me immensely. I'm in contact with GTM.

Oh that sucks man. Fingers crossed she's back on the road soon.

Awww man that blows. Hope it's not too bad.

Sorry to hear that, specially after our conversation :(

Good luck hope the damage is not catastrophic

Car drives under its own power. I'm going to get the stock stuff replaced, see if it fixes everything. If something is going on with the car still, I'll have GTM transport it back to their shop. The rubber smell, extra rubber chunks I saw, and the continual drop in power oer time, things are starting to add up.

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Dude... Idk if I have the patience you do. I had my turbos replaced and it took 4 days. I b*tched everyday about how long it was taking.

SS and I have talked about getting together and comparing our builds for some time here on the forum. We were pumped up to finally meet and spend a little quality time comparing and talking about our builds. I arrived late this morning to C&C and SS, Zoe, Jenz and her husband were waiting for me. I popped the hood and we started comparing our setups, the twin SC looks sweet. So SS takes me for a ride and it is as he has stated above. There is no way describe it other than it plane sucks to see his build fail the way it did today. I think the worst part of it was when SS went for a ride in my car. I could see it on face that it was like rubbing salt into an open wound. I know he enjoyed the ride, but it was a painful reminder of what he has been missing for sometime. I can't tell you how bad I felt watching his car being towed away. It's just not right!!! On the glass is half full side of things, I don't think there is anything wrong with the engine, it seems to be a problem with the SC pulley.

Hang in there bro...better days are coming!

God d*mn that was depressing to read... :(

Yup exactly how I feel...but I have to say I'm glad that I met SS as he is as genuine a person you can meet. I can't wait to hang with him again.

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You're such a nice and kind guy, buddy! Hope everything goes right for SS!

What's Sam saying about it?

Get the stock pieces replaced, test everything. If it's still messed up, he will transport it back to the shop and take care of it. I know his rep took some serious damage, but I've yet to have support problems with him. He even said he would tKs it right now as is, but it doesn't make sense to do that until the stock pieces are replaced. I'm crossing my Fingers to get the stuff replaced under warranty, but definitely not holding my breath. It can beeasily proved the superchargers caused the stock tensioner pulley to have some play in it (enough to shred the belt), and make my alternator pulley squeal.

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Good luck my friend. I hate trying to convince a dealership it wasnt due to aftermarket parts...

Hey Firehawk - the sucks - hope it all works out for you. When you say "get the stock pieces replaced" - do you mean take the SCs off and put it back to stock N/A?

I had one idler seize up soon after completing the build - but was able to fix it before it was anything more than a squeak.

I will definitely be interested to know, if you find out, what failed to cause the belt to shred, and why.

The alternator and stock tensioner pulley. The alternator pulley squeals and the tensioner pulley feels loose. The SC pulleys and belt on each side look fine. If it fails to perform after everything is checked tested, , then I'm ripping the $hit out and going turbo. I will have my power ;)

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