saliaga08

Alright I just did a s14sr to my s14 starts up perfect idles just fine boost is at 10lbs right now. Now for the issue, running the car to 4500rpm and it bogs out if I step on the accelerator to the floor it goes to 5500rpm then bogs.
What im running:fmic, isis rad and efans, hks ssqv4 bov, hks actuator, custom intake, and a s14sr maf.
Things Ive done so far. Replaced fuel pump with a walbro 255 and sparkplugs with ngk. Check all my wiring and everything is fine also did countless searches on this but none of them is really helpful so now I'm lost

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reallygood101

boost leak, prolly due to your bov opening under boost

Silvia716

Your maf could be bad too

reallygood101

is the sr20 kouki or zenki, i had somewat of the same problem come to find out i had the wrong ecu, wire harness and maf, switched that stuff out and now it runs like a champ... is the car running rich wit black smoke coming out of the exhaust

saliaga08

Checked for boost leak, Im ok in that area. Thanks for the input

This is the second maf and its doing the same thing as the 1st but I tested it and its operating fine. Thanks for your input.

I hope its not the wrong ecu. I bought my swap from JDMdepot. How do I find out if its the wrong ecu for the engine?

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saliaga08

I did a boost leak test and had no leak but maybe I'm wrong. How would I go about fixing that? It is a brand new HKS bov not a knock off.

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Walperstyle

boost leak is more then just a BOV issue. It could be a hole in your intake, vac line disconnected, or a coupler off sucking in un-recognized air.

anyways, what injectors do you have and are they high or low impedance?

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KA-T ORG-Function over Flush

saliaga08

stock injectors

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Nismo11

Did u ever find the problem?

swift14

are you running any air fuel controller leading to your ecu?

saliaga08

No and no Im going to dig into it next week haven't had the time

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saliaga08

Alright back from the grave.
I have replaced all vacuum lines, boost lines, fuel lines ect. new fpr new fuel pump new maf. All grounds are grounded, all wiring is secure, everything is fresh. Now Im still bogging out at 5500 rpms and if I ride it thru it goes to 6500-7000 and bogs there.

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projectblak

U may be running rich, I tuned my car on a safc and on the first few pulls it was running rich and would bog at 5000 rpm fixed the air fuel mix and now pulls hard to redline. Boost was at 10 pounds.

fliprayzin240sx

Check your mechanical timing and make sure its good. Then double check your baseline timing. For spark plugs what are you running and what is it gapped to?

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saliaga08

Yeah tuning is my next step.

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saliaga08

Well I have brand new ngk 7 at the gap the came running 13lbs of boost right now

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fliprayzin240sx

Its probably gapped too wide...get a gapper and gap them down to .030. Most off the shelf plugs are gapped anywhere between .044 to .056.

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AsleepAltima

stupid question maybe, but what octane fuel are you using?

projectblak

Yes yes. I forgot to mention this too he is correct I had 7 Ngk plugs and it was misfiring as well and bogging. switched to a gap plug and it went away instantly..