what is going on

[sho pleaser]

i ran my car about 3 week ago i ran a 15.2 at 94 i ran it last week and better weather and i ran a full sec slower 16.3 at 89. she feels like she nosed over. i checked fuel press was ok 30 at idol and droped to 25 when reved then i check with fuel press regulator vac line off an a solid 40 an reved up stayed solid , i also checked timing with adv prom out and was at 9' adv stayed that way when prom was in, possible belt stretched? what also should i look in any ideas

 

[sperold]

Does the car feel the same otherwise?
How was the launch and traction on the slow time, any wheel spin?
You can pull the codes and see if anything shows up.

 

[sho pleaser]

car drives fine and on quick sprints its just on 1/4 that it does it that i feel the diff , verry verry little weel spin it is a mtx, launch i good 1st and 2nd good its 3rd that it noses over one slip is like this left the other is right both me

r/t .472 .381
60 2.527 no spin 2.820 verry little weel spin
330 6.821 7.188
1/8 10.000 10.697
1000 13.100 13.811
1/4 15.230@ 94.04 16.382 @88.46

 

[sho pleaser]

oops
r/t .381
60 2.820 verry little weel spin
330 7.188
1/8 10.697
1000 13.811
1/4 16.382 @ 88.46

 

[sperold]

I like the no wheel spin time better. That no spin thing is very important.
Was it the same track? Same lane?
Maybe the track was slick on the second run, like after a big meet or something.

Do the code scan and see if anything is acting up.

 

[sho pleaser]

no not same night the 15 was july 28 and the other was august 20 both where 3 runs each night