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Performance, Brainstorming & Tuning Talk about modifications, or anything else associated with performance enhancements. Have a new idea for performance/reliability? Post it here. No idea is stupid! (please use Detailing and Appearance for cosmetic ideas)

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Old 07-03-2006, 03:15 PM   #11
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I have made of list of stuff to order this week let me know what you think.

FWI intense $180.00
SC tensioner 3.5" intense $30.00
Intense Modular Pulley System 3.5 pulley $100.00
Intense pulley puller $100.00

I want to install a high flow cat from magna flow does anybody have a direct fit part #?? thnks

I am looking into the tranny cooler but I'm not sure if I can do that myself?
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Old 07-04-2006, 11:44 PM   #12
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Quote:
Originally Posted by dubdeuce
I have made of list of stuff to order this week let me know what you think.

FWI intense $180.00
SC tensioner 3.5" intense $30.00
Intense Modular Pulley System 3.5 pulley $100.00
Intense pulley puller $100.00

I want to install a high flow cat from magna flow does anybody have a direct fit part #?? thnks

I am looking into the tranny cooler but I'm not sure if I can do that myself?
Good list, One thing I'd recommend doing is getting your PCM reflashed by Intense also.

On the Magnaflow cat, I got mine from Jeg'*.

They have three different part numbers, you will most likely want one with 2.5" in and out.

The part numbers are as follows;

642-94306 Oval $79.99

642-94316 Oval w/air tube $79.99

642-54306 Round $73.99

The Oval shape is the closet to a stock GM replacment.

You could step it up to a 3" exhaust but you may run the risk of losing low end, if you do.

This is just my opinion based on what I have learned here and there,

Hope this helps,

Tim
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Old 07-06-2006, 02:57 PM   #13
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Quote:
Originally Posted by willwren
The AFC is not a power-adder or a performance modification. It'* a tuning aid. Nothing more. They can be unreliable, flaky, and there are better ways of achieving the same results.

it actually is a power adder, considering with those minimal mods you WILL have KR, 98% of the time. and 6*kr is approx 12-15hp lost. not to mention the damage the kr does to your engine.

your car will most likely need more fuel when you go WOT when modded.......those mods make your car run leaner. the newer afc'* are perfectly reliable if you tune them correctly

and whats a better way of adding more fuel? most L67'* run lean when modded, mine did, my AFC 2.2 got rid of 4+kr, so not only did it add power (lost power) its safter for the engine. only other option is a powrtuner, not everyone is comfotable with tunning every aspect of there car, or in my case i bought the car with a dhp and scanner, so i spent the extra 100 for a afc, instead of 400+ laptop for a PT.

modded, you need a afc or powrtuner.......people that just drop pully sizes without scanning are asking for trouble


if you can, id get a dowpipe with a highflow cat......if they use the same DP as w-body'* the dp is a pretty good restriction.......even with a 3.5, scanning is necessary, you will have a good deal of kr with those mods. id save the money on a transmission cooler.......the big tranny rebuilder/ replacers, both zzp and intense have stated these trannies dont fail from heat, hard parts break, a transmission cooler will do nothing to help that. trannies have failed soley becasue of failed transmission coolers though, which is why neither company recommends them.
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Old 07-06-2006, 04:21 PM   #14
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Mikey, the AFC is not needed in any stretch of the imagination with the Mod list suggested here. It would serve no purpose whatsoever. A PCM does the job FAR better than an AFC 'step function' ever could.

You seem to have issues with your car that most others here don't.
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Old 07-06-2006, 06:01 PM   #15
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The real problem with an AFC is that it only modifies the air flow signal to the PCM.
The IAT and MAP are also inputs for fuel delivery.

A good example of how this can impact things is the effect I have seen on fuel trims as the weather changes.

In late spring temps here were in the mid 60'* to low 70'* and my trims were at 0.4%.
We had a week or so in the 100'* and my trims dove to -4.7%.
Lately we have been in the mid 70'* to low 80'* and trims are now -2%.

That is over 1% change in fuel requirement for a 10 degree change in ambient temps.

An AFC can not compensate for this. With a PCM flash (chip) the system can use all of its sensors to make adjustments the way it was intended to. With an AFC you need a good scan tool and a wide band A:F meter to tune correctly. With a PCM some one with more experience and a dyno has made the investment to get the maps right for the modded engine.

This is why a "package" from a reputable tuner is a good idea. (Everything is designed to work together)
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Old 07-06-2006, 07:05 PM   #16
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If you have fueling issues (and you shouldn't based on the mods being discussed here), it'* best to tackle them through MECHANICAL means before resorting to a bandaid/tuning aid like an AFC. If you can't work with the hardware to get it right, then use an AFC ONLY for the purpose of figuring out what to burn into a PCM.

Again, with a good ZZP, DHP, or INTENSE PCM, the discussion of an AFC is moot. There is no need for one.
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Old 07-06-2006, 08:34 PM   #17
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AFC and MAF scalers were popular before PCM access was widely available. The best solution is to have your car tuned on a dyno but any of the vendors standard or basic PCM offerings will bring out a lot more of the power than staying with a stock tune.

You may want to check out our Level 1 performance package as it has all your looking for with a 10% discount.
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Old 07-06-2006, 10:35 PM   #18
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Quote:
Originally Posted by willwren
Mikey, the AFC is not needed in any stretch of the imagination with the Mod list suggested here. It would serve no purpose whatsoever. A PCM does the job FAR better than an AFC 'step function' ever could.

You seem to have issues with your car that most others here don't.
considering you have a different engine then in question.......your experience with your engine is irrelevant. i do have a reprogrammed DHP pcm, and it ran lean still , my o2'* were in the high 800'* low 900'*. I dont think a AFC is needed, you wont run lean to the point of damaging your engine with a dhp, but a AFC will kill KR.

if you look at clubgp.com, most other people with my mods and a dhp run lean. its not dangerous lean, but a little extra gas is a EASY way to kill kr, my 02'* are now at 940. so to say i have issues others dont is wrong. 1st you have to look at 96+ owners, your 95 is different. looking at l67 owners on clubgp that have DHP'* and my mods, they run about the same, which is why a lot of people run afc'*....those that dont invested in a powrtuner, but not all people want to deal with that. A dyno tune is a better way, but not everyone has access to that.... Id love to have my car dyno tuned, but i wouldn't know where to go. then i could set my afc at all 100'* and use it to slightly tune when weather changes, for small tweaks.


my car doesn't and hasn't had fueling issues.....had 6 kr, now have 1-2kr.....most people with my mods and no afc have 5-8kr
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Old 07-06-2006, 10:52 PM   #19
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If you are fixing KR with an AFC (which can fail without you knowing it), you are taking a BIG risk. If most people running DHP PCM'* are running lean with your mods, DHP needs to re-map some stuff, or you need a custom burn.

An AFC controller isn't a KR tool by any stretch of the imagination. Imagine it failing under high-boost conditions.

An AFC controller is a LAST RESORT. All othe options must be looked at first. And a PCM can do everything an AFC can do, and more, and better, particularly if it'* programmed right. From what you've said, yours isn't.

I know for a fact that INTENSE PCM'* in cars modded like yours don't run lean.
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Old 07-06-2006, 11:02 PM   #20
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If DHP PCMs are the cause of running lean then Intense PCMs are going to be the cause of running rich. Come on now this lean problem is not because of the DHP. You should know better.
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