stock port rew/ efr 8374 low on power?
06-01-22, 12:05 PM
#32
Really interested to see where this goes.
Is the Dyno not calibrated correctly, or is it on the verge of failing? Are tires slipping from improper strapping? These are highly unlikely but there's a chance for everything. Does the butt dyno say its 330whp or 400whp?
What spark plugs are you running? I've been tuning my recently installed 8374 iwg street port IGN-1A direct fire setup, and I have ignition break up in the 12-15 psi range, starting around 3000rpm. Car just starts puttering and I think it may be because of the BUR9EQP plugs. Also running 93 premium fuel with 1.5-2oz premix/gallon and no AI.
Are you boost creeping because I am creeping to 18 psi on a 15lb spring, with vacuum hose connected directly to wastegate.
Eric
Is the Dyno not calibrated correctly, or is it on the verge of failing? Are tires slipping from improper strapping? These are highly unlikely but there's a chance for everything. Does the butt dyno say its 330whp or 400whp?
What spark plugs are you running? I've been tuning my recently installed 8374 iwg street port IGN-1A direct fire setup, and I have ignition break up in the 12-15 psi range, starting around 3000rpm. Car just starts puttering and I think it may be because of the BUR9EQP plugs. Also running 93 premium fuel with 1.5-2oz premix/gallon and no AI.
Are you boost creeping because I am creeping to 18 psi on a 15lb spring, with vacuum hose connected directly to wastegate.
Eric
Last edited by RX7nonSEQ; 06-01-22 at 12:09 PM.
06-01-22, 02:45 PM
#33
Original Gangster/Rotary!
iTrader: (213)
Really interested to see where this goes.
Is the Dyno not calibrated correctly, or is it on the verge of failing? Are tires slipping from improper strapping? These are highly unlikely but there's a chance for everything. Does the butt dyno say its 330whp or 400whp?
What spark plugs are you running? I've been tuning my recently installed 8374 iwg street port IGN-1A direct fire setup, and I have ignition break up in the 12-15 psi range, starting around 3000rpm. Car just starts puttering and I think it may be because of the BUR9EQP plugs. Also running 93 premium fuel with 1.5-2oz premix/gallon and no AI.
Are you boost creeping because I am creeping to 18 psi on a 15lb spring, with vacuum hose connected directly to wastegate.
Eric
Is the Dyno not calibrated correctly, or is it on the verge of failing? Are tires slipping from improper strapping? These are highly unlikely but there's a chance for everything. Does the butt dyno say its 330whp or 400whp?
What spark plugs are you running? I've been tuning my recently installed 8374 iwg street port IGN-1A direct fire setup, and I have ignition break up in the 12-15 psi range, starting around 3000rpm. Car just starts puttering and I think it may be because of the BUR9EQP plugs. Also running 93 premium fuel with 1.5-2oz premix/gallon and no AI.
Are you boost creeping because I am creeping to 18 psi on a 15lb spring, with vacuum hose connected directly to wastegate.
Eric
. I ran a 4 gauge ground from the ignition harness directly to the battery along with a zero gauge from the block to the battery. This cleared up almost all of my IGN-1A ignition issues, using dielectric grease on my plug boots took care of the last bit. Haven't had an issue since up to 20 psi, the setup is amazing when it's installed and grounded properly.
06-01-22, 05:15 PM
#34
Eric, I doubt it's the plugs. You'll need to robustly ground your setup---- twice as much grounding as you think you'll need. Talking daisy chaining from the ignition harness to the block to the battery to the chassis and back again . I ran a 4 gauge ground from the ignition harness directly to the battery along with a zero gauge from the block to the battery. This cleared up almost all of my IGN-1A ignition issues, using dielectric grease on my plug boots took care of the last bit. Haven't had an issue since up to 20 psi, the setup is amazing when it's installed and grounded properly.
. I ran a 4 gauge ground from the ignition harness directly to the battery along with a zero gauge from the block to the battery. This cleared up almost all of my IGN-1A ignition issues, using dielectric grease on my plug boots took care of the last bit. Haven't had an issue since up to 20 psi, the setup is amazing when it's installed and grounded properly.Really interested to see where this goes.
Is the Dyno not calibrated correctly, or is it on the verge of failing? Are tires slipping from improper strapping? These are highly unlikely but there's a chance for everything. Does the butt dyno say its 330whp or 400whp?
What spark plugs are you running? I've been tuning my recently installed 8374 iwg street port IGN-1A direct fire setup, and I have ignition break up in the 12-15 psi range, starting around 3000rpm. Car just starts puttering and I think it may be because of the BUR9EQP plugs. Also running 93 premium fuel with 1.5-2oz premix/gallon and no AI.
Are you boost creeping because I am creeping to 18 psi on a 15lb spring, with vacuum hose connected directly to wastegate.
Eric
Is the Dyno not calibrated correctly, or is it on the verge of failing? Are tires slipping from improper strapping? These are highly unlikely but there's a chance for everything. Does the butt dyno say its 330whp or 400whp?
What spark plugs are you running? I've been tuning my recently installed 8374 iwg street port IGN-1A direct fire setup, and I have ignition break up in the 12-15 psi range, starting around 3000rpm. Car just starts puttering and I think it may be because of the BUR9EQP plugs. Also running 93 premium fuel with 1.5-2oz premix/gallon and no AI.
Are you boost creeping because I am creeping to 18 psi on a 15lb spring, with vacuum hose connected directly to wastegate.
Eric
as far as holding boost I'm using the IRP kit and it held wastegate pressure fine. im using the turbosmart 2 port actuator with 14 psi spring
here is a video of a run my buddy took. I think it was when we started adding the meth
06-01-22, 06:04 PM
#35
was there a shop fan pointing toward your ic during the dyno session?
what were your iat(s) from each run?
ask the dyno operator to send you the drf (dyno run) files, then download WinPep and you can examine the runs more closely using a std or SAE correction factor or none at all
what were your iat(s) from each run?
ask the dyno operator to send you the drf (dyno run) files, then download WinPep and you can examine the runs more closely using a std or SAE correction factor or none at all
06-01-22, 06:08 PM
#36
was there a shop fan pointing toward your ic during the dyno session?
what were your iat(s) from each run?
ask the dyno operator to send you the drf (dyno run) files, then download WinPep and you can examine the runs more closely using a std or SAE correction factor or none at all
what were your iat(s) from each run?
ask the dyno operator to send you the drf (dyno run) files, then download WinPep and you can examine the runs more closely using a std or SAE correction factor or none at all
yea we had 2 fans and a mini one for oil cooler
06-01-22, 08:23 PM
#41
Is this the same dyno that you tuned your old 2020 set-up on that made 350rwhp @14psi on billet 62.5mm compressor turbo w/ 0.96AR exhaust and 44mm external WG on HKS cast manifold?
Cause yeah, I would expect the same size IWG turbo (EFR 8374) to make 20-25rwhp less at that boost just like a recirculated external WG has been shown to...
Maybe this dyno reads low and you need 1/4mile trap speeds to let you know power is where it should be.
Cause yeah, I would expect the same size IWG turbo (EFR 8374) to make 20-25rwhp less at that boost just like a recirculated external WG has been shown to...
Maybe this dyno reads low and you need 1/4mile trap speeds to let you know power is where it should be.
06-01-22, 11:50 PM
#42
direct comparison, issue seems to mostly manifest itself from 5500 rpm and up
no mention of AI in the thread, might be worth looking at or considering it having too much quench per a few other comments.
https://www.rx7club.com/single-turbo...-5psi-1106777/
.
Last edited by TeamRX8; 06-01-22 at 11:58 PM.
06-02-22, 09:48 AM
#43
Racing Rotary Since 1983
iTrader: (6)
there's your problem. notice breakup as torque rises. ignition of some sort. too wide plug gap, too hot plugs... were you running 9s? run the expensive (long lasting) iridium NGKs... 10 heat range all four. see my website (Tuning Ignition) for part numbers... look at the ground strap for heat indication. and no AI??? (that's not your misfire problem... it will be your engine problem at a later date.
you are looking for close to 100 hp.
you are looking for close to 100 hp.
06-02-22, 11:53 AM
#44
there's your problem. notice breakup as torque rises. ignition of some sort. too wide plug gap, too hot plugs... were you running 9s? run the expensive (long lasting) iridium NGKs... 10 heat range all four. see my website (Tuning Ignition) for part numbers... look at the ground strap for heat indication. and no AI??? (that's not your misfire problem... it will be your engine problem at a later date.
you are looking for close to 100 hp.
you are looking for close to 100 hp.
and yes that dyno was on stock 9 plugs all around. should I look at plugs or possibly ignition coil grounding? brand new haltech coils and wires
06-02-22, 12:54 PM
#45
Go through the coil set-up fields in software and make sure they are what people recommend for those coils.
Is it known those coils can fire in low 10s AFRs with boost?
And with aux injection?
Some ignition systems can and some ignition systems require you to lean AFRs out to fire.
My experience with a really hot ignition on my 13B is the turbo rotary doesnt really care about AFRs for power (10s or richer was same power as leaner) its a weak ignition that might need leaner AFRs to ignite mixture.
Is it known those coils can fire in low 10s AFRs with boost?
And with aux injection?
Some ignition systems can and some ignition systems require you to lean AFRs out to fire.
My experience with a really hot ignition on my 13B is the turbo rotary doesnt really care about AFRs for power (10s or richer was same power as leaner) its a weak ignition that might need leaner AFRs to ignite mixture.
06-02-22, 02:38 PM
#46
Racing Rotary Since 1983
iTrader: (6)
"I am running ai. 50/50 mix" good for you.
look at the ground straps on your plugs. they should be burnt clean for 50% of the length. if they are running too hot they will be burnt clean for more than 50%. either way they should all be 10s.
if your coils are they IGN-1A type they will easily fire 9.0 AFR with your turbo with any type of AI... unless something is amiss.
look at the ground straps on your plugs. they should be burnt clean for 50% of the length. if they are running too hot they will be burnt clean for more than 50%. either way they should all be 10s.
if your coils are they IGN-1A type they will easily fire 9.0 AFR with your turbo with any type of AI... unless something is amiss.
06-02-22, 07:28 PM
#47
Arrogant Wankeler
Go through the coil set-up fields in software and make sure they are what people recommend for those coils.
Is it known those coils can fire in low 10s AFRs with boost?
And with aux injection?
Some ignition systems can and some ignition systems require you to lean AFRs out to fire.
My experience with a really hot ignition on my 13B is the turbo rotary doesnt really care about AFRs for power (10s or richer was same power as leaner) its a weak ignition that might need leaner AFRs to ignite mixture.
Is it known those coils can fire in low 10s AFRs with boost?
And with aux injection?
Some ignition systems can and some ignition systems require you to lean AFRs out to fire.
My experience with a really hot ignition on my 13B is the turbo rotary doesnt really care about AFRs for power (10s or richer was same power as leaner) its a weak ignition that might need leaner AFRs to ignite mixture.
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