43!

iTrader: (3)

I wasn't able to be there while it was on the dyno and I haven't seen the torque numbers yet. It feels like the tq is off though. I preferred the car before this tune, it felt faster in the power band.

Who makes a better mid range cam then the Crower? I think these Pro2 cams suck, something I wasn't expecting because of all the good reviews out there.

Can I make more torque with different bolt ons? It felt awesome before but I just wanted more. This may be more hp, but it feels like it gave up a lot to get those peak gains.

Maybe I just need more seat time to get use to it but initial impression sucks. It feels like a stock ITR below 6k, then it goes. The crower cams felt like it had a low end punch that carried out.

E85 is awesome, smells great. Would switch to E85 for the smell alone.

Twin Cam

Were you ever able to find out the tq #s? I would have thought you would have felt more torque just with the switch to e-85. I went from 146tq on a dynojet in good weather to 159tq on a mustang dyno in hot weather with just 60% ethanol and could certainly tell the difference when driving. Maybe the crowers were better for your build?

93egSLEEPER

Pro 2's seem to never disappoint. Weird.

43!

iTrader: (3)

Do they make tq down low?

The crowers carried the tq out pretty flat and was fun. It felt like a tire shredder coming out of corners. After more seat time, it does feels fast up top but just not down low. And I probably use down low more on the street then I do driving around north of 8k.

93egSLEEPER

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43!

iTrader: (3)

Torque was back near 168 but it doesn't come on as early and didn't stay as flat as the first graph. The tuner, Pro Function, had played around with the cam gears in the safe settings and that was the best the car could do. After speaking with him, he described it as all motor hell. Hard to complain about the hp but no concrete answer how to improve by changing parts moving forward. Offered to do back to back testing with me if I can get my hands on different stuff. For now, not sure where to go. The bottom end is loose and has a lot of miles on it. I am considering raising compression and starting over. My goal would be fatter mid range for street. For now, its on hold. Going to try the drag strip again once it cools down a bit here and report back. Many thanks to Mikey for his time and magic in fine tuning.

43!

iTrader: (3)

I want to add a HFC because I don't like the test pipe smell. Since I have 3" exhaust, should I use a 3" or 2.5" HFC?

93egSLEEPER

3" would be best.

I have a 2.5" magnaflow metallic spun cat though if you're interested.

43!

iTrader: (3)

Thanks for offering. I would buy it from you but I'm cant wait to get it driving again.

43!

iTrader: (3)

I went this afternoon. My best pass was 13.218 @105.25 with a 2.084 60' out of five runs. Best mph was 106. It was about 75 degrees and sunny. This had the cat in and on street tires. I think with more practice and adjustments, I can make a 12.9x soon.

The engine stumbles only when in partial throttle, say 30 mph through my neighborhood trying to hold a constant speed. The tuner said it was probably the distributor and I changed it this morning but its still there. Doesnt do it in full throttle. Any acceleration and it goes away even when going say 30 to 40 slowly. But the second its partial throttle it bucks. Any ideas?

43!

iTrader: (3)

Goal achieved today, 12.90 @ 107 on street tires (205 Rival) with a 2.0 60'.

Couldn't have been happier when I

Ignore my sleeping on the tree, I was too focused on launching better.
This time I lowered the tire pressure to 25psi, stiffened up the rear shocks, set the front shocks to mid. I also installed a cut rear bumper I had and put the test pipe back in. Next time out, I want to play with the fuel weight and try out a velocity stack intake and maybe with the ram air through the headlight.

Twin Cam

Congrats man! I always wanted to break into the 12's on street tires.

93egSLEEPER

Damn good work bro! I did the same thing earlier this summer and it was such a great feeling. Now you'll want 12.50 haha

seelback

congrats and good job. Very smooth and easy going 12.90@107 pass. Get some slicks, dial in the launch control, pre-load, full throttle shift and mid 12's are on the way easy. definitely have the mph for mid 12's.

slowsleeper

Not sure where u are getting that feeling from about the Crowers being better than the Pro2s because from the looks of your graph, the Pro2s beat them pretty much everywhere except from like 72-84 mph, which when you are racing, u will probably never be in that RPM range.

43!

iTrader: (3)

I took my friend out and he said the same thing, this car lost its ***** with the pro2s. This is a dumb for instance but it would roast 2nd gear and even 3rd gear tires before. Now it doesnt even have the power to spin 2nd. I'd rather have it feel better for hpde so I will switch back after exhausting the 1/4 mile for now. No doubt it screams up top but it felt better before everywhere else. I have never seen the actual tq plot on the pro2. The tuner said it had none initially and he tried his best to get it back. Maybe the compression sucks for the pro2, maybe the motor is worn out, idk. It has 30k on this build from what I had heard from the previous owner. Compressions in the 265-270 range.

43!

iTrader: (3)

My mind is about made up to rebuild the lower end this winter. What are some piston options for 85mm and 14-14.5 compression?

93egSLEEPER

To keep decent clearances and not have a flame killing mountain dome it might be best to look into some custom options.

IMO jumping up to the 13.5:1 wisecos would be a decent move over going 14:1+

There are lots of places to get more from your current setup at this point than upping the compression.

Not my build, just my thoughts.

seelback

+1

43!

iTrader: (3)

Such as? Besides a header through the hood, I'm open to suggestions. Seriously, tear it apart. I would appreciate the insight.

93egSLEEPER

Better header
Play w/ the air induction system. The ultra STREET was not meant to achieve TOP end "peak" performance like other manifolds on the market. Top end is what matters most in a drag race. Maybe get a couple spacers and port it. I bet you can pick up some power that way. I know a member on here w/ his big 2L was not satisfied w/ the ultra street when compared to his Victor X. I can say I'm very impressed w/ how the VX performed on my setup which is VERY similar to yours.

Also, play w/ intake tube size and length. I think there is power to be had by running an extended arm out the headlight at the track. I tapered mine from 3.5" to 3". I'll post a pic shortly

I personally think The reason the Pro 2's "sucked" are they are not paired up w/ the intake and header properly. Give those things some more air to move and I bet they kill the crowers. You have a ported head, let it breathe!

93egSLEEPER

PSI GUY

iTrader: (2)

I drove ours for the first time on the street today, got the tune touched up with the new 3" exhaust and had to go for a drive. 260+ whp is stupid fun on the street, feels like a 400 hp turbo car.

PSI GUY

iTrader: (2)

I see your 3.5 to 3" intake, and raise you a 4...lol.

93egSLEEPER

LOL I almost went w/ a 4" V-stack and final pipe, but already had the 3.5" stuff laying around. I don't think the gain would have been worth the money though

I have a few tricks up my sleeve in the coming months...bigger header, cams and some corn

Pretty good showing for B20V's in this forum lately. I think 43!'s setup just needs some tweaking and it will be a low to mid 12 monster. I need someone to buy my RMF header and fit it up.