aklim

Reason I think it is a hack job is that you are not optimizing the curve and just adding timing everywhere. To me it is like say that because the pants are 2 inches too long in the legs, I get a couple sizes down.

aklim

Yes and my question is what if it doesn't want to see it at 4000 whereas it is good at 2000? Won't the KS be yanking out timing to prevent the knock it is seeing? I'd rather get the suit fitted for me as opposed to just upping a size because the legs are too short

aklim

I would say it depends on what you have done. In my case, you can't simply adjust the timing and be good. I have different injectors, cam, intake, headers, heads so they have to tweak more than timing.I doubt if they left the command idle or whatever it is called the same, it would work as well.

Tom400CFI

Think about it w/in the context of this thread, and the OP's immediate options; A chip that has consistently been proven to be worthless or "feed it what it wants" that has repeatedly been proven to be effective. Not everyone goes straight from 0-datalogin/tuning.

aklim

I suppose you are right in that context. I tend to steer away from those fixes since I have seen many idiots with the "some is good, more is better" mentality. 2 have blown 5.0L engines in their Mustangs. Usually it is "It is running so good, I thought just a couple of degrees more......". Another idiot tried that with Nitrous on his 90+ SHO Tarus. Ran like a raped ape. At least till he found his engine all over the road. My personal history with cheap fixes hasn't been good either. Cheap TFS heads cost me an LPE shortblock which they wouldn't warranty for obvious reasons. Entire driver side valves were loose and one piston kissed the valve when the spring broke from wobbling. Most everytime I tried a cheap fix, it has come back to bite me and bite me. Not usually an "if" but "when" question.

Tom400CFI

That is very true. The cheap fixes/methods often provide only short term benefits. Well said.

aklim

Usually, I end up paying LESS to fix the problem the right way than to band aid the thing and later have to fix it right. Now if you are selling the car off, I can see a band aid.

paintballoma

So I listened and I decided not to do the chip but to go another direction. I got a K&N air filter, I am replacing my broke EGR valve and since taking off the plenum is a nightmare due to the BBK throttle bode I figured install an adjustable fuel pressure regulator at the same time. I hear the stock fuel pressure regulators go bad often. I also got the intake temperature relocation kit for two reasons. The first reason the stock connector is brittle and snapped the connection tab and because everyone says its in a bad location and this will help out a lot. please let me know what you think.

PS---the plenum is usually easy to take off but when you install a BBK throttle body it makes it hard due to a so so design.

aklim

Haven't had that happen yet where the diaphragm ruptures but that is where a FPR can go bad. I suppose another point is the spring gets weak. That I haven't seen a case of so hard to be certain but not sure there is much more. My adjustable is set to 44 psi since that is what stock pressure is off and the fuel pressure calculations for the injector is often based off.

You go to NAPA and the "HELP" rack has a bunch of connectors. Who is "everyone" and why do they say it? The only reason I can think of that says it is in a bad location is that they are trying to get air temp measured before it gets warm so they can fool the ECM into thinking it is colder so there is more enrichment. Being that I am against trying trickery on the ECM, I'd have to say it is a waste of money.

Not sure. I have used ACCEL and now Holley for a TB. Never used BBK so not sure why it would be such a PITA.

MrWillys

Also, as Cliff has pointed out that fuel calculations are based on the CTS, and the ECM only uses the IAT when dealing with EGR. My concern about replacing the regulator diaphragm is that pressure be recorded prior if it is still good to be used as a base to work from. GM used different spring pressures throughout the years that is being replaced with a one size fits all that can throw off the BLM's.

aklim

I think when I disconnected it the last time, my car ran different. Not sure if it is good different or bad different. I know I don't have EGR

Without the IAT readings, how would my MAP sensor and TPS calculate the volume of air?

Dave Schotz

I've had plenty of experience with tuned ports, if you have stock cam and heads, a chip does nothing vs. Just bumping up the initial advance to say 10 to 13 degrees!

I've dyno tested custom proms and made passes over and over at the dragstrip, took asm 3 separate attempts to finally best my 13' initial advance, by one tenth and 1 mph, so definitely not worth the money imo.

Dave

aklim

But if you take a stock chip and soak it in blinker fluid?

Dave Schotz

Lol!! Ya never know!

I did leave out, there are Benefits, if turning off egr/emissions/vats, etc

aklim

Maybe YOU don't know squat about my blinker fluid. Instant 20HP gain, thank you very much.

Dave Schotz

Sweet, send me some... I think mine is getting low. LOL

aklim

$99.99 per gallon. Forum special.

pkincy

Hey Dave, long time.

In my opinion our cars are now getting old enough that if still stock the best gains will come from simple and thorough maintenance. Early on I bought a hypertech chip for my 93. As i got deeper into tuning i pulled the bin from that chip and compared it to my stock BLDL.bin.

The actual chip has space for 256,000 bytes, or is it bits, of information, while the actual bin file is 4096 bytes/bits in length. The file comparator showed 8 of 4096 bytes/bits were different between the 2.

The biggest change was the lowering of the fan on and fan off temps to take advantage of the 160 thermostat. That took 4 of the 8 changes. I forget the other 4.

So spending the cost of a chip on a tuneup will give you far more bang for the buck.

Dave Schotz

Absolutely agree!

Peace,
Dave

MikeT 90 C4sixer

Mr. ****** is correct. If you have an '85 TPI, you do not have a MAP sensor, you have a MAF sensor. That's how you get the fueling calculations. The cars that do use a MAP sensor, are 90-91, and they do use the MAT or IAT for fueling calculations.
HTH.