Quote:
Originally Posted by edwin84
Ok so I upgraded my 00 Sentra GXE by adding Headers, Cold Air Intake, crank pulley and totally rebuild my engine by porting and polishing the heads, bigger side Pistons but no compression on them just stock, i opened up the intake and exhaust manifold and removed the butterfly system on the intake manifold that the 00-01 have. My problem now is that my car after all this upgrades is giving me worst performance than stock and on top of that is burning my gas twice than before so instead of doing the 300 mi it did before in a full tank is doing 120 mi. friends at Nissan dealer said that it is because there is a high flow of air coming in to the engine and the ECU is acting up because it can't regulate the air coming in. That's why neither Nismo nor any of the top brands for CAI have been making them for this model. Also since I put a Hotshot Header and the header made for this model doesn't come with the CAT, having to remove one cat and relocating two of the O2 sensors until after the second CAT might be some of the problem.......the problem that i have in the car right now is that is burning too much gas but is acting like it needs more gas because when i put my foot in the pedal it star to kindda jump a little and there it isn't much reaction of performance.: confused: ....A friend a Nissan dealer said that if I send the ECU to "JET Performance" to have them upgrade the computer software and change some applications on the ECU of the changes made to the engine so that ECU let more air come in and out......A mechanic friend says that it could be my fuel pump or the filter of the gas but I Found out that the only filter is attached to the fuel pump so I would have to replace the hall thing....What should I Do...?
Days After
ok, so! I got my ECU back from JET Performance and I installed it on my car but now i got service engine check soon, there are 3 codes; P0171 system too lean(bank 1) P0175 system too rich(bank 2) and P171 again.......what to do, what to do?
The weird thing is that after all these performance parts that were add to the car the same codes came on but then they when away, but now after the ECU upgrade they are back and it's got to do with me changing the header and relocating the secopndary o2 Sensors after the second CAT......Help!
ECM,fuel presure,MAF,o2 sensor,etc...Help!!
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