Dyno results
#17
Re: Dyno results
I'm confused on this knock sensor issue. Are you saying your knock sensor is bad (sensor on the block), or are you saying you will be replacing the knock module (in the PCM) with one from an LT4??
#20
Re: Dyno results
was throwing a code, scanned it, replaced it, code went away, now gotta take it back to dyno and see if i pick up any hp.
but the weird thing now. was that the ses was on all the time. Now after replacing sensor it goes away during driving, but comes on sometimes at a stop/idle. Then goes away again during accelration. Going to have it scanned again when i take the car back to the shop to fix my oil pump driveshaft.
but the weird thing now. was that the ses was on all the time. Now after replacing sensor it goes away during driving, but comes on sometimes at a stop/idle. Then goes away again during accelration. Going to have it scanned again when i take the car back to the shop to fix my oil pump driveshaft.
#21
Re: Dyno results
Originally Posted by turbo_Z
Well you are obviously comparing your numbers with what youd see from a 6 spd car and you just cant do that. So you want to know where your power is and im telling you its wrapped up in that tranny.
#22
Re: Dyno results
I don't think the numbers are right. Look at altjar (sp?). Stock heads with a gm847,which is pretty similar to his cam, and he made like 350-360 at the wheels. The dyno chart looks good and it is peaking around where it should, but the fuel makes a huge difference. I picked up 30rwhp just getting the fuel maps right. Then, you can start playing with the timing. Go get it dynoed again with the a/f ratio displayed and go from there. Don't get discouraged.
#23
Re: Dyno results
my thought it that your intake is holding you back, way back. i gained almost ten hp with my cai. when your car with that huge cam is asking for way way way more air than my stock stuff so i think that you will see a massive difference with one.
#24
Re: Dyno results
i know but as mentioned above there was a guy who made 350-360 with a gm847 cam with stock heads,intake,tb and i know it was m6, but i am still looking for at least 330-350!
#25
Re: Dyno results
Originally Posted by crAzy95z28
i know but as mentioned above there was a guy who made 350-360 with a gm847 cam with stock heads,intake,tb and i know it was m6, but i am still looking for at least 330-350!
#26
Re: Dyno results
You are asking the motor to do a lot with a big cam and no way to breathe for it with stock heads. Add to that an A4 and your numbers will be lower than you'd expect. Don't get to bogged down in dyno #s...Get the a/f ratio right, timing, etc and run it at the track and let the track tell your trap speed tell whats going on...Dynos are great for tuning but don't get too hung up on who's making what...
I suspect that once you get some heads to match that cam you'll see a huge difference. You're asking a big pump (cam) to move air through a swizzle stick of a straw with those stock heads...
--Alan
I suspect that once you get some heads to match that cam you'll see a huge difference. You're asking a big pump (cam) to move air through a swizzle stick of a straw with those stock heads...
--Alan
#27
Re: Dyno results
Locking the converter is really hard on your converter I don't know what kind of converter but I would be careful about locking it up alot. Many are not really built strong enough to lock up a WOT.
#28
Re: Dyno results
Originally Posted by turbo_Z
At what RPM? I think it would be higher than 6500 rpm and your graph falls off after 6200 rpm. Could be your rockers are set too tight.
this could be true. I do have the True LT4 rockers 1.6 ratio. They bolt down without a poly lock nut.
ill have my mechanic take a look at them and make sure they are not set too tight.
i know they are suppose to be what 18 pounds trqed?
also do you think having the roller rockers too tight would throw a code? I mean the car drives great.
Last edited by crAzy95z28; 03-14-2006 at 02:42 PM.
#29
Re: Dyno results
Originally Posted by crAzy95z28
this could be true. I do have the True LT4 rockers 1.6 ratio. They bolt down without a poly lock nut.
ill have my mechanic take a look at them and make sure they are not set too tight.
i know they are suppose to be what 18 pounds trqed?
also do you think having the roller rockers too tight would throw a code? I mean the car drives great.
ill have my mechanic take a look at them and make sure they are not set too tight.
i know they are suppose to be what 18 pounds trqed?
also do you think having the roller rockers too tight would throw a code? I mean the car drives great.
your stock intake(assuming a CAI) is going to hold you back, as is a stock TB for bolt-ons. all that there is about 15-20 hp.
#30
Re: Dyno results
Originally Posted by turbo_Z
At what RPM? I think it would be higher than 6500 rpm and your graph falls off after 6200 rpm. Could be your rockers are set too tight.