marc97taws6

iTrader: (6)

Good luck. I need to hit up a track rental as well. I'm sure there are some gains just with decent IATs alone. DA at night is usually better too!

Pray

iTrader: (7)

I am not familiar with the Dynamic compression test. I just have the normal cranking compression testing kit and the Summit dual gage leak down tester. Which doesn't work as advertised BTW.

Pray

iTrader: (7)

Yeah, the ambient was 47* IIRC but I was seeing the runs start at 77* and end at 66*.

My main concern is my 4+ loss of MAP KPA from the beginning of the run to the end and my .5 g/cyl loss in the exact same DA. I have to find this restriction. I am pretty sure that is what is causing my problems.

Pray

iTrader: (7)

These passes were on pump E at 77% in -1,300 DA with the stock manifolds.


This was yesterday on pump E at 75% in +18 DA with the headers.


See what I mean that it just wouldn't 60ft or 1/8 mile. This car has really only been a 22 to 23mph back half car. It has always been a 1/8th monster compared to its back half. The biggest difference yesterday was 26.5mph on the back end. Nothing I did tuning wise changed anything on the front half. I ran about 10 of these 11.12-13's in a row and some were so close I though they gave me the wrong slips.

marc97taws6

iTrader: (6)

Dang, that thing front halfs hard!

Seemed to fall off a bit after the headers. Hopefully you get the bugs ironed out. A slight restall might be the ticket

assasinator

Those are honest and expected numbers. Not inflated or 'internetz' hype.

They demonstrate driveline losses from running lower gears.

The thing you are doing also demonstrates how hard it is to gain those last few tenths. No bench racing. Best documentation.

sxc Z28

Keep it up Pray! That head wind was the killer all kinks aside.

408-99-f

Its basically a compression test while it's running and at temp, so a bad cam lobe or lifter issue may show up a little better when compared to another cylinder, not just checking the sealing capabilites of the cylinder.
And I ran into a bad leak down tester the other day, mine was at work and I picked up a cheep one at a local tool store. It was supposed to be a high pressure tester but the % guage would not read right. I did a little research and apparently the % guage was a low pressure guage. I plugged the first port and ran the pressure guage on the second cranked it up to 100 psi and plugged it into the cylinders and basically every psi was a % just like the old ones. Maby it's your issue as well?

Pray

iTrader: (7)

Thanks for the kind words and encouragement guys. When I get back into town next week I will dig back into it. It is my MAP being down 4 KPA that has me worried. I looked back at a bunch of logs and even on pump 93 in all sorts of weather I am seeing over 101kpa at the hit and no less than 98KPa at 6,500. I think once I find that culprit I will be good. The G/Cyl is a direct reflection of MAP over MAF. MAF is staying close to the same on the runs so there is a definite restriction some where behind it I would assume. I am starting to worry that something was in my stock CAI from storage that got sucked into the motor some how. IDK, I am reaching now. I am also getting the cut out's in to eliminate anything from the AFM valves on.

I will look into that Dynamic tester deal. Maybe my shop owner buddy has one. I do my leak down tester the same way. Set it to 100psi and check the cylinder at three to four different piston heights on the compression stroke.

I am also going to start over from scratch on the tune with 93. I am getting the OLSD VVE lined out first and then bringing in the MAF. I want to get rid of the lean hit at the start. It doesn't hit target afr till about 5K so it is lean all the way through the 60ft. There are some strange AFR spikes and what not during the run. Mainly after the shifts. We are at every ounce counts right now. I am going to find every single one of them.

Poppacapp

I would be beating some ****** f'ers asses.

Pray

iTrader: (7)

​​​​​​​A 3,500 stall in this thing would be a game changer. Just that extra 1K rpm would make a world of difference in how this car leaves.

corysmach1

Good work buddy. Keep at it.

Cole Curtis

Yeah this is awesome hope you see 10s. Idk what cai intake your running but I had issues with one slightly collapsing under load and causing a restriction lowering my map when I was tuning. Took me a real long time to figure out... something to think about

Blown383LS1

iTrader: (23)

I'm glad to see that the 6th gen is getting newer Camaro owners back to the track. 5th gens are rare compared to the newer Mustangs at the drag strip around here. I'm sure you will hit 10's with bolt ons and that is great for keeping the competition going.

UltraZLS1

iTrader: (13)

Better get them 10s and the glory before I do....

good luck

Milan opens april 8.

US 131 (bit farther drive) open april 1

Ill be ready...

Pray

iTrader: (7)

Latest dyno numbers. 492/509rw SAE smoothed to 5. I still have cutouts to go on and I am going to drain the trans and change the filter. I am also going to go back completely through the tune starting with the VVE table. The tq tables are now available as well. So more to come. This is 6th gear on E85. The first run was 498rw but my dyno guy forgot to hook up the tach lead so no tq number. So I threw that run out.

RedFuryZ28

Linky no worky

Pray

iTrader: (7)

Should be fixed.

Pray

iTrader: (7)

I also got started on porting a set of LT1 heads. I also flow tested a stock IM and my ported IM/TB.

HioSSilver

iTrader: (8)

Holy tq batman!