Need help figuring out a problem
Need help figuring out a problem I need some assistance with figuring out what exactly is wrong with my car and how to fix it.
Here is my dyno chart:
<img src="http://www.camarohighway.com/Files/MyCars/2001CamaroZ28/DynoChart1.jpg" alt=" - " />
You'll notice the overall wavyness of the lines & the big loss of power at about 5200rpm.
This dyno chart is from when my car was 100% stock, and since then I've done the following mods:
SLP Loundmouth exhuast, K&N Air filter, SLP Airbox lid, SLP Air intake temperature module, SLP Cold air induction, SLP 85mm MAF, ASP crank underdrive pulley.
This past Saturday at the dragstrip the big loss of power was very noticeable on the strip.
I use nothing but 93 octane gas in my car.
So far what I'm hearing is that the wavy lines are caused by an ignition problem, and the loss of power is caused by knock retard.
Are these accurate assumptions?
Please offer any input you can about what the problems are and what I can do to fix them.
Thanks in advance to anyone that helps out.
<small>[ October 01, 2002, 10:03 PM: Message edited by: OctaneZ28 ]</small>
Here is my dyno chart:
<img src="http://www.camarohighway.com/Files/MyCars/2001CamaroZ28/DynoChart1.jpg" alt=" - " />
You'll notice the overall wavyness of the lines & the big loss of power at about 5200rpm.
This dyno chart is from when my car was 100% stock, and since then I've done the following mods:
SLP Loundmouth exhuast, K&N Air filter, SLP Airbox lid, SLP Air intake temperature module, SLP Cold air induction, SLP 85mm MAF, ASP crank underdrive pulley.
This past Saturday at the dragstrip the big loss of power was very noticeable on the strip.
I use nothing but 93 octane gas in my car.
So far what I'm hearing is that the wavy lines are caused by an ignition problem, and the loss of power is caused by knock retard.
Are these accurate assumptions?
Please offer any input you can about what the problems are and what I can do to fix them.
Thanks in advance to anyone that helps out.
<small>[ October 01, 2002, 10:03 PM: Message edited by: OctaneZ28 ]</small>
Staging Lane
Joined: Jul 2002
Posts: 68
Likes: 0
From: HUB CITY W Tx
Re: Need help figuring out a problem I'm no mech a nic by any means!!! But after all of the mod's have you used an HPP III to retune it. Don't know if it will help or not-sure helped mine. Just my $.02, there are some guys on here that can probabley tell you exactly what to do & how to do it. lol <img border="0" title="" alt="[Embarrassed]" src="gr_emb.gif" />
Re: Need help figuring out a problem I don't have an HPP3, but I plan on getting one eventually. Not sure it would help in this situation though.
Anybody else have any input?
Anybody else have any input?
Launching!
Joined: May 2002
Posts: 258
Likes: 0
From: New Orleans, La.
Re: Need help figuring out a problem Your problem is most likely detonation.The `01 and `02 models tend to expeience this problem more than earlier models due to a more aggresive timing curve .I've heard several different remedies for this problem but the consensus seems to be getting your car to run cooler.T stat,fan switch,water wetter,distilled water/dexcool mix etc.If you can hear pinging at 4-5K RPMs @ WOT,detonation is your problem.I am not an expert by any means,but the concept of pre ignition caused by excessive heat seems logical to me.I also think the only advantage of the HPP3 would be to set your cooling fans to come on sooner in conjuntion with a cooler T stat.Good luck!
Re: Need help figuring out a problem Well, my stock dyno runs were simular with very low timing. I added the Timing Tricker mod and they smoothed out some, then added port MAF ends and it smoothed some more. The more timing "tricks" that I did seem to show better gains.
