Hey guys I just got my AI 200cc heads, intake manifold, and solid roller set up. I am putting it on a 383 with 11.8:1 compression and I have a tuning session for next week but my 1952 jeep just broke down so I need something to get to work. It's probably 5 miles round trip. Do you think it will run? and will it be ok to "limp" to work and back or is would it be to much without a tune? thanks in advance for the help!

Freddie

 

is the current tune a factory tune?

 

honestly I don't know. If I had to guess I would say no because it was definetly faster than a stock LT1 camaro

 

The fact you stroked it, added heads, intake, bumped compression, and cammed it are going to make me say I wouldn't. Is it really worth risking all the money spent?

 

In all reality I it really isn't worth it, I am just like itching to cruise my truck again since its been down for like 6 months now. I do have tunercat and the cable and everything and read quite a bit about it but I just don't think I would forgive myself if I messed anything up by me tuning it. Can maybe someone point me in the right direction of what I should do with a tune?

 

1) A big solid roller with a lot of overlap is going to cause it to run excessivley rich at low rpm. 2) I would also guess that you bumped up the injector size with the mods.

Either one of those would cause it to run rich enough to risk washing the lubrication off the cylinder walls and diluting the oil. A short trip will not heat the oil up enough to drive off any fuel. All of those together would be dangerous.

 

So basically I am not driving it then haha. Yea I don't want to screw anything up. I just wrapped up the mechanical part of the build now for the wiring haha. Can anyone point me in the right direction of how to tune because I have tunercat and the cable so I might fool around with that for a bit. Thanks guys

Freddie

 

Have you looked at the "Computer Diagnosis and Programming" forum? There are a lot of people there who have posted basic info. There is one sticky at the top of the forum listing, but mostly you would have to "search" through the posts.

One logical approach would be to get a mail order tune that would get you set up with the basic parameters, and allow you to drive it safely, scan it, and then tweek the tune as you need.

 

Be sure you also get a laptop scan tool to go along with Tunercat...even if someone else is going to do the tune, or mailorder, without a scan tool your leaving all of your hard work up to the tuner to do it right...and with a mail order its hit or miss if its right for long term use. Get a scan tool and know how to read what its telling you...mainly, you want no or very little knock, and Long Term integrators / BLMs near 128 at different speeds and throttle for best results then go from there.

 

To clarify:

The long term (learned) fuel corrections are block learn multipliers (BLM's).

The short term fuel corrections are the "Integrators" (INT's).

 

by scantool do u mean like datamaster? Thanks for the help guys

 

Yes.... a data logging software setup, like FreeScan, TTS DataMaster or pcmcomm.

 

off topic but injuneer, im wondering if you have a preference of these... assuming you log wideband A/F with said software.

 

I don't use any of them, because I run a MoTeC aftermarket ECU, and it has full data logging capability built into it, including wide-band O2's (which I don't have). People send me both DataMaster and FreeScan data logs to review, and I haven't really noticed any difference between them. The graphics on DataMaster can be usefull for reviewing the data, but I prefer to reduce the data log to an Excel spreadsheet, so that I can manipulate the data and find the oddball data cells, calculate averages, find min and max values, etc.

I'm not aware of any of those providing direct capability to log wideband data. Some people will use the AC pressure input to log a wideband, since its a 0-5V range. But I have never seen a log with that data, or analyzed one.

 

oh ok, thanks anyway. using AC pressure is exactly what im planning on doing. Im trying to decide if its worth the money to buy datamaster to do my tuning with or not. ill quit hijacking this thread now.