mid night dyno research. added Z.SPEED 60 mm catback and ebay 4-2-1 header. even with stock cat power increase is HUGE!!



ebay 4-2-1 ceramic coated header. but the coating is so cheap it is flaking after like 1 hour driving. lame. at least it does look stainless under neath and it works well.



i was a bit shocked at the increase across the entire power band...

 

 

yesterday, i installed an old intake manifold that i have sitting around for years. it's the one that develop by omniman and dnr when they used to work at junk2 back in 2002 or so. it's a crude design but it works. basically they took a 170 bhp b16a IM and mated to a D16Z6 IM flange. then used silicone hoses to play with the length until it made the most power. there were no 3d design involved at all, simple trial and error. this is why the packaging is so poor. imo the runner is about 1" too long when i study the old project remix dyno graphs so after this baseline dyno i will probably cut this one and make it 1" shorter. :-P

still using the stock d16z6 58-56 mm tb for testing purposes. pulls much harder to redline. was going to sears point to drag it but traffic already started so that'll have to wait until next wed. will try to dyno this week.

 

went to last weds night drag racing @ Sears Point with 132 whp the best run of the night was:

60' 2.535
330' 6.838
1/8 10.412
mph 68.02
1000 13.525
1/4 16.147
mph 86.08

60' time was 2.5's all night long. sucks. but it was consistent all night i was the bracket winner! went through 5 rounds. i think the car is a little bit heavier than i thought. my guess is around 2200 lbs or so and ~2370 lbs race weight. removing power steering pump and ac system next.

 

ha, i forgot to lower the pressure tire pressure last week. i dropped it to 30 psi and then 20 psi this week. the tires are old and cracking but 60' improved to 2.3's. best run this week now with 145 whp and 111 ft-lbs:

60' 2.350
330' 6.562
1/8 10.011
mph 70.34
1000 13.035
1/4 15.606
mph 85.33 (i had to brake check near the light i might've broke out otherwise) on a 15.53 dial. best mph 88.99. it's much warmer this week than last week... i think it could've hit 89.5 mph if it was as cold as last week. the valve train picked up a solid 3 mph over the quarter. not bad. 3/10th of et improvement came from reduced tire pressure and better launch. about 3/10th were from power gain.

i got eliminated in 2nd round by .0326 :-(

best mph run:

60' 2.393
330' 6.624
1/8 10.070
mph 70.57
1000 13.083
1/4 15.624
mph 88.99