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2G No boost 1st/2nd Gear

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DSM_15_2G

5+ Year Contributor
40
18
Dec 6, 2018
Serbia, Europe
I've searched but haven't found many other threads with the similar issues, if there are any I apologize

As the title states, I don't feel any boost in 1st and 2nd gear.

Since my car was a 4g63NA 2G 99 year (Euro spec), after I boosted it with GST parts (you have my build list in profile), the car ran like crazy, in 1st gear it would rip, 2nd gear crazy power all the way to 5th.

So lets say how turbo works, get the rpms to 3k and you start to hear the turbo spooling and with the engine power there then + boost starts pulling you forward in any gear. Now I can't feel that in any gear anymore LOL

I can hear the turbo spool in 3rd gear but there isn't much of a pulling feeling anymore like before and in 1st and 2nd gear can't even hear it nor feel it. + I can hear the bov release air when I let go (I have Injen intake pipe and open air filter) with 2.8 from turbo to the back custom exhaust

I do have a boost gauge but the issue is, it was connected wrong and it reads 25psi all the time so I can't see

I checked the turbo for play and its solid as it was when I installed it (it was rebuilt).

Maybe boost leak ; wastegauge actuator ; exhaust leak can cause this?

I also have ECM Link V3 just to mention
 
Have you done a compression test? Could have some bad rings.


Yes, no issues there. I am not talking about engine lack of power but there's no added turbo boosted power anymore. I did the turbo swap recently (this summer) with a little pedal push it will spool and pull with added power, now in 2nd gear rips when I do a pull (I never WOT) but I can't feel that turbo pull anymore, it use to spin tires in 2nd gear at 4k rpm I think
 
Fix the boost gauge then do a boost leak test. Check the WG for good tension and report back. We're here to help.
A log during it would help a bunch.
 
Possible major boot leak. Do you have a boost leak tester? You can make one for a couple bucks and definitely fix the boost gauge.
 
Fix the boost gauge then do a boost leak test. Check the WG for good tension and report back. We're here to help.
A log during it would help a bunch.

Working on getting the boost gauge fixed, what about spark plugs? I have a new set which I gapped myself (BPR6ES to 0.32 or 0.30 can't remember on top of the head).
I do have this log, I know it has knock, prolly because its still an NA engine with higher compression, running 100 octane gas over here. Since then, had some timing pulled in those areas where knock occured. Before when the turbo would spool and pull, the turbo pull would feel smooth as if something is pulling me, now it almost feels like its struggling and I can feel a bit of vibration (the more I press the gas pedal the more it vibrates)


Possible major boot leak. Do you have a boost leak tester? You can make one for a couple bucks and definitely fix the boost gauge.

I know boost leak can cause this, tested boost leak 2 months ago but I never reached to the intercooler area to see, should check it out anyway
 

Attachments

  • log.2019.11.05-01- Pull (with knock).elg
    56.6 KB · Views: 107
Appropriate fuel pressure is also something to check as boost comes in so its not starving for fuel. Is the boost source hooked up to your AFPR? Just had to ask the obvious.
 
Appropriate fuel pressure is also something to check as boost comes in so its not starving for fuel. Is the boost source hooked up to your AFPR? Just had to ask the obvious.

Boost source as in boost gauge? Im still running a stock GST FPR , if you meant on the boost gauge, it is set up correctly but since its pro sport electrical gauge it has a sender thingie which needs to be connected to the gauge. Thats the part that got installed wrong (it isn't wired together so the gauge doesent get the right signal)
 
Boost source as in boost gauge? Im still running a stock GST FPR , if you meant on the boost gauge, it is set up correctly but since its pro sport electrical gauge it has a sender thingie which needs to be connected to the gauge. Thats the part that got installed wrong (it isn't wired together so the gauge doesent get the right signal)
Is the vacuum line still hooked up to the regulator is what I meant.
 
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