Topgunz - air to air upgrade

perez519 · 10-10-2017, 10:49 PM

Quote:

Originally Posted by perez519

Yes I have GTR map sensors. But for some reason they still over range and the map code still came back. So I got my tuner to disable that map code.

I don't think I have a vacuum leak I've checked all the lines. I could do a vacuum test as you mention and find out.

I'm using greddy infometer touch boost sensor and gauge. It's digital and connects via OBT-2 live. The monitor can record hi peak of the boost. The weird thing is, it says I hit 9.3 psi at 7600rpm. But during dyno it only shows 7.5-7.7psi max and my tuner could see on top end the power when the car start to slip or not get anymore psi.

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Also can anyone explain the mid power dip on torque? As you can see the top dyno was done October 2016 and the only changes I made was put on Tbatt anti-slip pulley. Hoping to fix my top end slip and get 9psi.

Is it possible it slipping on the SC idler pulley also? I'm using 9lb pulley provided by stillen btw.

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Jayhovah · 10-11-2017, 09:04 AM

Quote:

Originally Posted by perez519

Also can anyone explain the mid power dip on torque? As you can see the top dyno was done October 2016 and the only changes I made was put on Tbatt anti-slip pulley. Hoping to fix my top end slip and get 9psi.

Is it possible it slipping on the SC idler pulley also? I'm using 9lb pulley provided by stillen btw.

What clutch are you running (assuming your are MT)?

My dyno had a similar dip in the middle and it was my OEM clutch starting to slip.

perez519 · 10-11-2017, 09:18 AM

Quote:

Originally Posted by Jayhovah

What clutch are you running (assuming your are MT)?

My dyno had a similar dip in the middle and it was my OEM clutch starting to slip.

Using Southbend TZ Kevlar/ fly wheel/ Zspeed CSC kit. My torque is only at 339tq.

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TBatt · 10-11-2017, 10:12 AM

The top graph looks like classic belt slip to me. The bottom one looks like a tuning issue.

Did you do any changes to the exhaust such as removing the stock cats and going to test pipes?

perez519 · 10-11-2017, 01:43 PM

Quote:

Originally Posted by TBatt

The top graph looks like classic belt slip to me. The bottom one looks like a tuning issue.

Did you do any changes to the exhaust such as removing the stock cats and going to test pipes?

Yeah talking to my tuner now. He also thinks it might be Uprev's ROM updates! But not sure yet.

No changes to exhaust system. Just the anti- slip pulley kits and a re-tune to clean up the top end. Was hoping to pick up 9psi and little more top end power.

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10-11-2017, 10:12 AM	#4 (permalink)
TBatt Track Member Join Date: Apr 2013 Location: Huntsville, AL Posts: 832 Drives: 2019 GT-R Rep Power: 20170	The top graph looks like classic belt slip to me. The bottom one looks like a tuning issue. Did you do any changes to the exhaust such as removing the stock cats and going to test pipes? __________________ RJM pedal, Hotchkis Sway Bars, FI TDX, FOG Light, Z1 Slotted Drilled rotors, Stillen SC, Quaife ATB, Z1 Oil cooler, AEM Gauge Set, Galeforce gauge mount, Avant Garde M590 Hypersilver w/RE-11, TopgunZ A2A kit., ECUtek tuned by Seb: ROLL TIDE!

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