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Forum: DIY PROM
06-20-2021, 03:57 PM
Replies: 36
Views: 4,807
Posted By JAR_Tudor

Re: Street Rodder with IROC 350 TPI Needs Cam and Prom Advice

It appears I keep coming back to engine tuning every 6-8 years... Despite the fact that I have to keep restarting the process of learning how to tune over and over again, the advancements on this...
Forum: DIY PROM
12-31-2013, 09:09 AM
Replies: 36
Views: 4,807
Posted By JAR_Tudor

Re: Street Rodder with IROC 350 TPI Needs Cam and Prom Advice

By adding WB, do you mean install a permanent WB (perhaps in opposite collector) in additional to a heated NB sensor or temporally install WB in the tail pipe (since I do not have cats)? I haven’t...
Forum: DIY PROM
12-29-2013, 12:37 PM
Replies: 36
Views: 4,807
Posted By JAR_Tudor

Re: Street Rodder with IROC 350 TPI Needs Cam and Prom Advice

Six_Shooter, thanks for the prompt reply - I fully concur on typically avoiding "auto" results or blindly following computer results that give the precise wrong answer to 15 decimal places... I am...
Forum: DIY PROM
12-29-2013, 09:04 AM
Replies: 36
Views: 4,807
Posted By JAR_Tudor

Re: Street Rodder with IROC 350 TPI Needs Cam and Prom Advice

Thanks to this sight and utilityguy2, I was able to get the engine tamed to a point where the whole garage did not smell like a combustion chamber ready to detonate... This afforded me the time to...
Forum: DIY PROM
07-09-2012, 11:56 AM
Replies: 36
Views: 4,807
Posted By JAR_Tudor

Re: Street Rodder with IROC 350 TPI Needs Cam and Prom Advice

utilityguy2, Thanks for the modified spark tables - I was able to fire it up for the first time in ~5 years after just 2 seconds of cranking!

Actually idled better than it ever has! I then...
Forum: DIY PROM
07-09-2012, 11:35 AM
Replies: 36
Views: 4,807
Posted By JAR_Tudor

Re: Street Rodder with IROC 350 TPI Needs Cam and Prom Advice

EagleMark, the O2 is actually mounted horizontally as shown in the picture – perpendicular to the header collector tube. See any issues with non-heated in this configuration?
Forum: DIY PROM
07-08-2012, 07:19 AM
Replies: 36
Views: 4,807
Posted By JAR_Tudor

Re: Street Rodder with IROC 350 TPI Needs Cam and Prom Advice

A few more pictures of the car... While searching for .bin files, I established an account over on GearHead-EFI.com - as I noted there, the ‘89/90 IROC TPI 350 fits as if Henry Ford anticipated it -...
Forum: DIY PROM
07-08-2012, 07:14 AM
Replies: 36
Views: 4,807
Posted By JAR_Tudor

Re: Street Rodder with IROC 350 TPI Needs Cam and Prom Advice

A question on O2 sensors...

I am using ceramic-coated block hugger headers. I welded the stainless O2 bun ~1” below the header flange into the 2-1/2" stainless pipe - with this configuration my...
Forum: DIY PROM
07-07-2012, 05:17 PM
Replies: 36
Views: 4,807
Posted By JAR_Tudor

Re: Street Rodder with IROC 350 TPI Needs Cam and Prom Advice

utilityguy2 & Six_Shooter,

Thanks for the feedback and leads.

Honestly I have been avoiding straying too far from the stock configuration primarily due to my comfort zone (lack there of) - I...
Forum: DIY PROM
07-06-2012, 09:55 AM
Replies: 36
Views: 4,807
Posted By JAR_Tudor

Re: Street Rodder with IROC 350 TPI Needs Cam and Prom Advice

Due to many unforeseen circumstances, project car has sat for a few (5+) years - unfortunately with old gas, so I had to go completely through fuel system with new fuel pump, filters, fuel rail...
Forum: DIY PROM
03-12-2007, 08:01 PM
Replies: 16
Views: 1,377
Posted By JAR_Tudor

A couple of other posts snuck in before I...

A couple of other posts snuck in before I submitted...

I salvaged the wiring loom from the '89 IROC and retained grounding locations as stock (other than modifying it from MAF to SD) - I went...
Forum: DIY PROM
03-12-2007, 07:46 PM
Replies: 16
Views: 1,377
Posted By JAR_Tudor

91L98Z28, I measured temperatures primarily...

91L98Z28,

I measured temperatures primarily at idle - i'll try 2,000 RPM this weekend.

The cylinders are 4 & 6 (right/middle) - opposite side from brake booster, etc.

I will go through...
Forum: DIY PROM
03-12-2007, 06:18 PM
Replies: 16
Views: 1,377
Posted By JAR_Tudor

Imbalanced Cylinder Air/Fuel Ratios???

Has anyone ever witnessed a situation where there is an apparent imbalance in Air/Fuel Ratio (AFR) between cylinders in an engine?

I have begun the tuning process of my engine – see link for...
Forum: DIY PROM
03-12-2007, 05:44 PM
Replies: 36
Views: 4,807
Posted By JAR_Tudor

Thanks 69 Ghost, I have removed my eprom,...

Thanks 69 Ghost,

I have removed my eprom, installed flash, successfully reprogrammed, and have begun modifications with SAUJP V2. I have backed out the "Low Octane disable" (as it is more...
Forum: DIY PROM
02-04-2007, 03:36 PM
Replies: 36
Views: 4,807
Posted By JAR_Tudor

Thanks JP86SS, I have fixed the VE & Spk...

Thanks JP86SS,

I have fixed the VE & Spk Adv "difference from AUJP tables" I uploaded in my previous post(thanks).

As you can see the "mail order" BIN is pouring more fuel in at the higher...
Forum: DIY PROM
01-30-2007, 08:42 PM
Replies: 36
Views: 4,807
Posted By JAR_Tudor

Greetings, I have pulled the data out of my...

Greetings,

I have pulled the data out of my modified prom. Below is the DIFFERENCE between my current VE table and the stock AUJP VE table. In other words positive numbers are higher than stock...
Forum: DIY PROM
01-06-2007, 06:46 AM
Replies: 36
Views: 4,807
Posted By JAR_Tudor

I Got "rtp4-tool" to connect and download, but...

I Got "rtp4-tool" to connect and download, but the data was corrupted.
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Check engine light never comes on after engine runs - never had any codes stored - everything seems to be happy.
Forum: DIY PROM
01-04-2007, 09:22 PM
Replies: 36
Views: 4,807
Posted By JAR_Tudor

Thanks for the guidance and responses. I haven't...

Thanks for the guidance and responses. I haven't had a chance to respond yet as I have been too busy researching cams & DIY-proms on TGO.

To answer the questions posted...
- It is a roller cam....
Forum: DIY PROM
12-23-2006, 10:55 AM
Replies: 36
Views: 4,807
Posted By JAR_Tudor

Street Rodder with IROC 350 TPI Needs Cam and Prom Advice

Greetings!

About 9 years ago I began building a 1937 Ford street rod with a 1989 IROC Camaro 350 TPI engine in it. I had converted it into a 1990-92 speed density system, bored the engine to...
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