The Sophia Project

Chuck33079 · 03-15-2014, 11:15 AM

Quote:

Originally Posted by SS_Firehawk

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.

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?

SS_Firehawk · 03-15-2014, 11:52 AM

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

Chuck33079 · 03-15-2014, 01:13 PM

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.

SS_Firehawk · 03-15-2014, 01:18 PM

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.

SS_Firehawk · 03-17-2014, 10:35 PM

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.

SS_Firehawk · 04-02-2014, 04:09 PM

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.

Jordo! · 04-02-2014, 05:56 PM

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.

SS_Firehawk · 04-02-2014, 06:49 PM

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.

Jordo! · 04-03-2014, 02:01 AM

Quote:

Originally Posted by SS_Firehawk

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?

SS_Firehawk · 04-03-2014, 08:26 AM

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.

Jordo! · 04-03-2014, 12:53 PM

Quote:

Originally Posted by SS_Firehawk

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!

Chuck33079 · 04-03-2014, 12:57 PM

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

SS_Firehawk · 04-03-2014, 02:08 PM

Quote:

Originally Posted by Chuck33079

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.

Chuck33079 · 04-03-2014, 02:12 PM

Quote:

Originally Posted by SS_Firehawk

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.

SS_Firehawk · 04-04-2014, 03:32 AM

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

03-15-2014, 11:52 AM	#332 (permalink)
SS_Firehawk Premium Member Join Date: Oct 2011 Location: Tampa Posts: 4,142 Drives: 13' Magma Red Nismo Rep Power: 7335	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 __________________ Old Car:GTM TSC'd 550whp / 410lbft tq @ 11.88PSI New Car: Under Construction

03-15-2014, 01:13 PM	#333 (permalink)
Chuck33079 A True Z Fanatic Join Date: Nov 2011 Location: Houston Posts: 12,265 Drives: 2011 370ztt Rep Power: 29539	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. __________________ 2011 MB Touring-Sport-6sp-Nav/GTM TT/FI TT TDX/JTran/Kosmic/Eibach/Hotchkis/SPC/CSF/RPS/SoThatsWhereAllMyMoneyWent

03-15-2014, 01:18 PM	#334 (permalink)
SS_Firehawk Premium Member Join Date: Oct 2011 Location: Tampa Posts: 4,142 Drives: 13' Magma Red Nismo Rep Power: 7335	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. SgtGoldy likes this. __________________ Old Car:GTM TSC'd 550whp / 410lbft tq @ 11.88PSI New Car: Under Construction

03-17-2014, 10:35 PM	#335 (permalink)
SS_Firehawk Premium Member Join Date: Oct 2011 Location: Tampa Posts: 4,142 Drives: 13' Magma Red Nismo Rep Power: 7335	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. Luciano13 likes this. __________________ Old Car:GTM TSC'd 550whp / 410lbft tq @ 11.88PSI New Car: Under Construction

04-02-2014, 04:09 PM	#336 (permalink)
SS_Firehawk Premium Member Join Date: Oct 2011 Location: Tampa Posts: 4,142 Drives: 13' Magma Red Nismo Rep Power: 7335	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. Hotrodz likes this. __________________ Old Car:GTM TSC'd 550whp / 410lbft tq @ 11.88PSI New Car: Under Construction

04-02-2014, 05:56 PM	#337 (permalink)
Jordo! A True Z Fanatic Join Date: May 2010 Location: nirvana Posts: 6,394 Drives: 2023 NATM Rep Power: 418	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. SS_Firehawk likes this. __________________ Enjoy it. Destroy it.

04-02-2014, 06:49 PM	#338 (permalink)
SS_Firehawk Premium Member Join Date: Oct 2011 Location: Tampa Posts: 4,142 Drives: 13' Magma Red Nismo Rep Power: 7335	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. __________________ Old Car:GTM TSC'd 550whp / 410lbft tq @ 11.88PSI New Car: Under Construction

04-03-2014, 08:26 AM	#340 (permalink)
SS_Firehawk Premium Member Join Date: Oct 2011 Location: Tampa Posts: 4,142 Drives: 13' Magma Red Nismo Rep Power: 7335	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. __________________ Old Car:GTM TSC'd 550whp / 410lbft tq @ 11.88PSI New Car: Under Construction Last edited by SS_Firehawk; 04-03-2014 at 08:28 AM.

04-03-2014, 12:57 PM	#342 (permalink)
Chuck33079 A True Z Fanatic Join Date: Nov 2011 Location: Houston Posts: 12,265 Drives: 2011 370ztt Rep Power: 29539	How is AF correction nearly the same between banks even though the MAF voltages are so far off? __________________ 2011 MB Touring-Sport-6sp-Nav/GTM TT/FI TT TDX/JTran/Kosmic/Eibach/Hotchkis/SPC/CSF/RPS/SoThatsWhereAllMyMoneyWent

04-04-2014, 03:32 AM	#345 (permalink)
SS_Firehawk Premium Member Join Date: Oct 2011 Location: Tampa Posts: 4,142 Drives: 13' Magma Red Nismo Rep Power: 7335	I finally evened my debt for Phunks road race pump. he was super patient with me and I'm grateful for that. Woot! Mr&Mrs and Hotrodz like this. __________________ Old Car:GTM TSC'd 550whp / 410lbft tq @ 11.88PSI New Car: Under Construction

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