No boost efr 8374 IWG need a little help
OK i put the efr 8374 IWG in the car a little over a year ago (turbo smart kit). Have the turbo smart IWG-75 with 14lb springs. Had 13psi no problems! I got an additional spring to add a little more (19lbs now) so i can get the psi up to 18 (water inj is comming soon have boost limited to 13psi). But right now i have NO boost. I just noticed the my EGT's while cruising are in the 1600-1700's. Those temps are normally under full boost. Cruising i'm usually around 1k. How should i start trouble shooting this? As far a i can tell there is no boost leak. Is the wastegate staying open?
thanks Carl |
Have you tried removing the 5# spring to see what happens w your original setup? Does the problem continue to persist?
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Have you touched the ignition system?
do you have a wideband? Has it lost off boost torque? bit hard to say without knowing more but if running richer than normal I would check there isn't a restriction from sometthing left in an intake or exhaust pipe if you removed stuff to change the gate. Otherwise check plugs and leads, might only be running on trailing spark? |
Originally Posted by Topolino
(Post 12243378)
Have you tried removing the 5# spring to see what happens w your original setup? Does the problem continue to persist?
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Originally Posted by Slides
(Post 12243412)
Have you touched the ignition system? Nope
do you have a wideband? Absolutely Has it lost off boost torque? not that a can tell. bit hard to say without knowing more but if running richer than normal I would check there isn't a restriction from sometthing left in an intake or exhaust pipe if you removed stuff to change the gate. Otherwise check plugs and leads, might only be running on trailing spark? |
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Once it stops raining I'll pull the plugs, put the car up and have a look. I added a quick log of a run around the block. I can't get it to go past 4k RPM either in 2nd or 3rd gear. didn't try any other. If it is the plugs i'l have to order some.
Thanks Carl |
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Here are pics of the 7420-10's in the front rotor. Rear look the same. Prob need to replace those? I deff have a loss of torque it'll barely get past 4k rpms in first gear. I logged my quick trip around the block i am seeing 1-2 psi of boost right now. But it sure doesn't feel like it.
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Have you confirmed something in the exhaust or intake isn't blocked? Did you remove stuff to change the actuator?
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https://cimg3.ibsrv.net/gimg/www.rx7...8871a1ee07.jpg
So I think I found the problem after I got some nice weather....Any suggestions on a good cat or go resonated mid-pipe? |
Stainless cored 100 cell or 200 cell. Either of those or a res will be less retrictive than the ceramic cat, you need to make sure it doesn't run lean in the top end with the new setup. Should make a bit more power.
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Thanks Slides. I just bought the racingbeat res. Should have it before the weekend.
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Okay so I guess this thread is getting a bump
Specs are as follows: -Large streetport 13b-rew -Efr8374 IWG on Turblown's short cast manifold -Turbosmart BOV -Turbosmart Actuator with spring at 15psi -Adaptronic Modular M2000 -MAC 4 port valve -Custom vmount -3.5" downpipe going to 3" resonated midpipe and 3" resonated catback With duty set at 20% it boosts to 17 psi early on and then falls off to 8-9 psi after 6000rpm. Have checked every coupler, actuator rods everything nothing seems off. Bought a used straight piped 3.5" full exhaust to try and see if it's the culprit. |
4 ports really need to be run closed loop.
how is it ported to the diaphargm? |
I know this isn't the proper way to fix, but have you tried adding duty above 6,000 RPMs to see if the boost picks up???? Just set a boost cut in case you get way too much. This may steer us to whether its mac valve related or restriction related/mechanical.
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Originally Posted by Slides
(Post 12413012)
4 ports really need to be run closed loop.
how is it ported to the diaphargm?
Originally Posted by strokercharged95gt
(Post 12413016)
I know this isn't the proper way to fix, but have you tried adding duty above 6,000 RPMs to see if the boost picks up???? Just set a boost cut in case you get way too much. This may steer us to whether its mac valve related or restriction related/mechanical.
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