375 rwhp BUT...........
#1
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375 rwhp BUT...........
Ok just had my car tuned on a rolling road dyno.
375rwhp @ 18psi (simplified seq)
My problem is peak power is achieved at around 6500rpm then boost drops off, sometimes loosing 1-2psi and others up to 4.5psi.So obviously power drops as well.
Any ideas why or what i can do to hold boost steady?Will an EBC controlling the wastegate instead of the stock solenoid fix this?
Car has following:
Mild port
PFC
FMIC
3" DP.... My car is RHD so collector may not be as open as what US spec can run
3"MP
3"CB
Efini Y pipe
Tial 50mm BOV
850cc primarys
Walbro pump
Sard reg -8an fuel line and fittings
Removed airpump.powersteer,a/c
Air temp was consistent 33deg Celsius
Injector Duty around 93%
Fuel pressure was good on every run
375rwhp @ 18psi (simplified seq)
My problem is peak power is achieved at around 6500rpm then boost drops off, sometimes loosing 1-2psi and others up to 4.5psi.So obviously power drops as well.
Any ideas why or what i can do to hold boost steady?Will an EBC controlling the wastegate instead of the stock solenoid fix this?
Car has following:
Mild port
PFC
FMIC
3" DP.... My car is RHD so collector may not be as open as what US spec can run
3"MP
3"CB
Efini Y pipe
Tial 50mm BOV
850cc primarys
Walbro pump
Sard reg -8an fuel line and fittings
Removed airpump.powersteer,a/c
Air temp was consistent 33deg Celsius
Injector Duty around 93%
Fuel pressure was good on every run
#4
Mr. Links
iTrader: (1)
Remove the sequential system and you'll be able to maintain the power. If you want to keep the sequential setup, you'll probably need to use a regulator on the pressure tank to see if it will help:
https://www.rx7club.com/3rd-generation-specific-1993-2002-16/high-boost-sequential-pattern-743365/
https://www.rx7club.com/3rd-generation-specific-1993-2002-16/high-boost-sequential-pattern-743365/
#5
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Remove the sequential system and you'll be able to maintain the power. If you want to keep the sequential setup, you'll probably need to use a regulator on the pressure tank to see if it will help:
https://www.rx7club.com/showthread.php?t=743365
https://www.rx7club.com/showthread.php?t=743365
I haven't tried different wastgate spring, can they be changed in the stock wastegate actuator?
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#8
rotorhead
iTrader: (3)
Also, you can switch to 3 port boost control solenoids (same kind used in aftermarket EBC's) inexpensively by buying this one: http://www.frightprops.com/FrightPro...ID=A-0013-0082 .
and the stock connector (solenoid side) is here http://www.bmotorsports.com/shop/pro...oducts_id/1674
so if you have two 3 port solenoids you will be able to have individual control for precontrol and wastegate using the PFC. If you buy an aftermarket EBC you will lose individual control over wastegate and precontrol.
and the stock connector (solenoid side) is here http://www.bmotorsports.com/shop/pro...oducts_id/1674
so if you have two 3 port solenoids you will be able to have individual control for precontrol and wastegate using the PFC. If you buy an aftermarket EBC you will lose individual control over wastegate and precontrol.
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