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| Performance Discussion about performance modifications and issues. |
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12-23-2006, 10:50 PM
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#1 | |
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AF Newbie
 Join Date: Oct 2006
Location: MELBOURNE
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please help! overboosting problem
hi pplz
thanks so far for your intel, i have another problem... ive tuned my car with the pfc and ebc but it was tuned on a hot day.. i took it out last night on a cold day, nailed it and there was boost spiking.. is this because ive tuned it on a hot day and the air is thicker? i turned the boost down and and its holding boost properly now. should i have another setting on my ebc for a hot day too? hot day went to 13psi no probs, then on the cold day went to 14.7psi.. turned it down for the cold day and made 13psi again... im confused... sorry bout all this chit chat. thanks guys  |
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12-24-2006, 04:20 AM
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#2 | ||
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AF Fanatic
Join Date: Apr 2001
Location: London, Arizona
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Re: please help! overboosting problem
Quote:
As for EBC, just change it for what you need.
__________________
 R32 GTR w/351w .020 forged, 8.9:1, PTK T76, Turbosmart 40 BC & 45 WG, Tial 40 BV, AFR 205s 310/245, 228/228 550/550 114 Hydro, 1.7rr, Isky RLs, 4" HKS exhaust, ARC 30x16x4 IC, 8 point cage, C2 gauges, 2 step, C4 3200 stall w/ R Manual & Hurst Ratchet shifter, 17" Panasport G7s, CSU 750 & bonnet, Vic Jr intake, 3.63 gears, Corbeau Carrera seats, Custom wide body, Bomex side skirts and rear 1/4 caps, Tommy Kaira bumper. |
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12-25-2006, 12:06 AM
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#3 | |
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AF Newbie
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Re: please help! overboosting problem
should i lower the spool up rate on my ebc?... ive turned it up abit
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12-25-2006, 12:16 AM
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#4 | |
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AF Fanatic
Join Date: Apr 2001
Location: London, Arizona
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Re: please help! overboosting problem
As long as it does not over boost, your golden.
__________________
R32 GTR w/351w .020 forged, 8.9:1, PTK T76, Turbosmart 40 BC & 45 WG, Tial 40 BV, AFR 205s 310/245, 228/228 550/550 114 Hydro, 1.7rr, Isky RLs, 4" HKS exhaust, ARC 30x16x4 IC, 8 point cage, C2 gauges, 2 step, C4 3200 stall w/ R Manual & Hurst Ratchet shifter, 17" Panasport G7s, CSU 750 & bonnet, Vic Jr intake, 3.63 gears, Corbeau Carrera seats, Custom wide body, Bomex side skirts and rear 1/4 caps, Tommy Kaira bumper. |
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12-27-2006, 11:18 PM
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#5 | |
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AF Newbie
Join Date: Oct 2005
Location: Puyallup, Washington
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Re: please help! overboosting problem
It is normal for the boost to be higher when the weather is colder, denser air. Yes you need to monitor and change your boost settings for different weather conditions.
Moisture is going to affect it to as is dryer air. |
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01-03-2007, 06:29 AM
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#6 | |
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AF Newbie
Join Date: Oct 2006
Location: MELBOURNE
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Re: please help! overboosting problem
so therefore it feels like im getting more power cause it actually goes better in colder weather. my front bar is upgraded and my cooler sits behind an opening and u can see the cooler. would this help and how much power increase would this do considering i explained this front bar scenario? Also im curious how much 730nm of torque is atw to the flywheel.. does anyone know the precise calcs
thanks guys |
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01-05-2007, 03:34 AM
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#7 | |
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AF Regular
Join Date: Apr 2004
Location: Coffs Harbour
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Re: please help! overboosting problem
I answered your torque question HERE
Post up the dyno graph and I can tell you exactly how much torque you have at the flywheel. If you cannot post, catch me on MSN
__________________
N14 Pulsar VQ35 conversion with major N/A upgrades, 6 spd FWD manual HLSD 18" Rims, big brake kit, Coil overs and freshly painted Smashed Black VY SS Ute  The workhorse... Twin turbo 5.7L LS1  Boyd Coddington 19" Turbine Wheels AP Racing 4 Piston Brakes Tein Coil over Suspension HKS EVC 6 Boost Controller PLX Devices DM-200 OBDII Custom Front Mount Intercooler |
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01-05-2007, 03:38 AM
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#8 | |
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AF Newbie
Join Date: Oct 2006
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Re: please help! overboosting problem
whats your msn mate? private message it to me if u can
cheers |
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01-05-2007, 07:36 AM
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#9 | |
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Skyline Man
 
Join Date: Nov 2001
Location: Show me state, Missouri
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Re: please help! overboosting problem
Another thing to keep in mine about temp changes. If you tune your car on a hot day, then later in the year when cool weather moves in you're AF ratio will also go out of wack. You could be running up to 3 pts leaner due to the air density difference. If you have a way to check that I would. This to me would also be a great consern, especially if you wind up +12 to 1 AF.
1.5 psi difference on boost shouldn't make you worried unless you've tuned your car to the edge on the hot day. 3psi would definately concern me though.
__________________
You don't own a Skyline, then don't cry to me about it! 1992 Silver R32 GTR tickled to 450hp. - Sold when I left NZ in 2004 Arguing on the Internet is like competing in the special olympics. Even if you win, you're still retarded. Never confuse kindess with weakness. AF user guidelines, Please remember to abide by them  
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