Wierd shifting at wot

[cameron92]

Just got my 2000 grand prix gtp with 160kms(canada). I did the homeade intake and went for a drive. I let it warm up and then i floored it from a stop all the way to 160. But when I was in second gear, the rpms stopped at 5500 for a good second and then continued up to 6000ish and shifted normally. Any ideas on what could cause this, im really hoping my tranny isnt going already

[BillBoost37]

Do you have a modified pcm?

[cameron92]

Car is completely stock besides the homeade intake.

[BillBoost37]

Ok, in that case 6k is odd, because your shift point should be 5500-5700. Have you had this happen more than once?

[cameron92]

Ya it happens everytime, and I think the shift point is around 5700 with performance shift on. I just tried it with performance shift off and it shifted at 5500 without hesitation. Also I just had the engine light come on and it. is a o2 signal low bank 1 sensor 2, I have a leak in my exhaust so I think that may have caused that.

[BillBoost37]

Ahhhh fix the known issues. Then see if the other items fix themselves magically.

[cameron92]

Cleared the code, it still does it(I think this is the most I've hit 160 lol) but I noticed I'm not getting full boost, I'm missing 1 lego block.