[mike85gn]

So I take Zap's advise and plug my "possibly" '87 chip into an '87 ECM which I bought from John DiCarlo last year but never used, no MAT sensor, and using the '85 MAF. Turn the key and voila! Silky smooth idle! No longer fumigating the neighborhood. So it runs much better now. So I went ahead and captured some Turbolink data on it right when it was warming up. The data is below:

IAC 68%
LV8 44
TPS .56V
INT 131
O2 (kept fluctuating as it does)
MAF 6GPS
BLM 106
O2 18-20

I have a recording that shows the BLM's going from 128 (Learn Control OFF) and then changing to 106 (Learn Control ON) if anyone wants to see them. Am I still running too rich? What do you guys think?

 

[Zap]

I finally had to go with the stock "233" regulator on mine. Anything higher and I always ran too rich. Also your tps is too high (at idle, I assume). All you may need to do is adjust the tps. A header leak near the O2 sensor will also cause low blm's.

 

[mike85gn]

I gots me an adjustable unit. Should I just lower the rail pressure until BLM's are in the correct range (118-138)?

 

[forzfed]

Originally posted by mike85gn:
I gots me an adjustable unit. Should I just lower the rail pressure until BLM's are in the correct range (118-138)?

Mikey, why don't u adjust your TPS first then adjust the pressure. Just a thought!

P.S. STOP kissing Zap's butt!

 

[mike85gn]

Hahaha! Nick, while you were typing that, I was outside adjusting my TPS

At .38v, the BLM's are sitting right around 115. Pretty good for now, idle is dead smooth and most of the other settings pretty much came in line. Still might need to screw with pressure, but we'll see with some high-test and some boost! I think we're on the right track here!

 

[Zap]

Originally posted by forzfed:
Mikey, why don't u adjust your TPS first then adjust the pressure. Just a thought!

P.S. STOP kissing Zap's butt!

I am the hotair KING! Worship me!

Be careful with the FP. You don't want to lean out under boost, that's for sure.

 

[mike85gn]

I don't know if this counts for much, but I also got my alarm and stereo in today too. That's worth some peace of mind and enjoyment. Extra weight might have cost me a trillionth or so tho

 

[firebird_1252]

i dunno about hot air but i know on a ic car 128 on the blms is good.

 

[TurboJim]

Originally posted by mike85gn:
Hahaha! Nick, while you were typing that, I was outside adjusting my TPS

At .38v, the BLM's are sitting right around 115. Pretty good for now, idle is dead smooth and most of the other settings pretty much came in line. Still might need to screw with pressure, but we'll see with some high-test and some boost! I think we're on the right track here!

From roughly .22 to .46 there will be NO difference in ANYTHING. IN that range is considered 0% throttle. The only reason your BLM changed is you didnt cycle the key. As soon as you do, your BLM will go back to where it was. As for the low BLM, what RPM is the car idling at? 6gps is borderline high for idle, and could cause the EC< to pull fuel as based on AIRFLOW its injecting a little too much. The hot air MAF is pretty close at low RPM (as compared to the 87MAF, but once you start going up in airflow, the value skews a LOT. Be VERY careful as you get into boost because it it gonna lean out BAD! If nothing else, contact me or Jay Carter to have the chip cal'd for a hot air maf. Jay would honestly be a better choice because I only did this once and had no feedback on how the car ran. But if you wanna be a guinea pig, I'd be glad to give it a shot. But if it isnt right, and blows up yer car cuz u werent careful, I hold NO responsibility.


------------------

Jim Testa
1986 Regal T-Type
Stock block w/girdle, stock rods, TRW's, JE pins, 214/210 roller, TurboMotion port/polished heads w/1.77-1.50 valves, T&D roller rockers, Champ intake w/o EGR, PTE plenum, Accufab 70mm TB, MSD50's, TE61, PTE front mount, SMC alcohol inj, JT trans, 3000 vigilante, stock rear w/Hotchkiss arms, and kick ass tunes..

 

[Zap]

First of all, his tps was at .56 (clearly stated, I think) Secondly,
I can only tell you what mine was like. NO lean out with 20+ pounds of boost with the 85 MAF sensor, if anything it was a bit rich even with the 233 regulator. I think I'll stop answering tech questions and leave it to the "experts".

 

[Steve Wood]

Originally posted by Zap:
and leave it to the "experts".

Leave Testa alone and stop being crochety. Otherwise I will swing thru NJ on the way to West Vermont and we will both kick your bulldog behind, or is that your face?

You did not take your hormone shot this morning, did you?

 

[Steve Wood]

Oh, yeah, you mean ass...Jimmy was pointing out that the idle tps is scaled and there is nothing magic about .38 as I understand his post. You can move the tps while the car is running and the idle will change but when you kill the engine and restart it, the idle will go back to where it was as long as the tps is in the range he gave because the ecm scales the number back to a common point each time you start it......

There is not too much magic in the idle tps either....come on to the farm with me, you can play with rocks and stay happy! Whistle while you work, so to speak! *g*

 

[Zap]

The article on GNTType.Org that Dan Smith wrote on changing to the 87ecm stated that he changed to the 87 style MAF sensor because his car ran too rich with the 84/85 style. I have ran both on my car and noticed little if any difference under boost on any of the Turbolink numbers.

I have been told, or have read that:

1. Hotair cars can't run over 20lbs of boost

2. Hotair cars can't max out the 255 air flow on a MAF sensor

3. Too much other crap to list about hotair cars

Either the experts are wrong, or I am living in my own fantasy land. Either way, as long as I am happy, I will continue to believe what I believe and take everything else with a grain of salt. I get tired of being contradicted every time I try to help.

 

[Steve Wood]

Just relax and put Hot Earred Missile expert by your name!

We all love you! just not in the West Vermont way!~

 

[mike85gn]

Originally posted by Zap:
I have been told, or have read that:

1. Hotair cars can't run over 20lbs of boost

2. Hotair cars can't max out the 255 air flow on a MAF sensor

3. Too much other crap to list about hotair cars.

Tell that to Drew Carlton. 11.92 no intercooler, I think that's plenty fast!

Jim, I'm not seeing what your saying about the idle. You say changing between .22v and .45v won't make any changes, and the only reason the BLM's changed was because I cycled the key? Please excuse extreme stoopidity: but which key is that? The ignition key? I see where you're coming from with the whole MAF issue and am going to keep it in mind. But when I started the car, BLM's were at 128. It warmed to about 115. Is this normal? Am I ok? I still have your contact info and am looking to chat with Jay sometime about hte changes to see if something can't be done if it gives me fits.

Zap, settle down! You already got the car running for me

Now go boast!

 

[forzfed]

Originally posted by Zap:

Either the experts are wrong, or I am living in my own fantasy land.

Life is just a fantasy, can't you see Zap's fantasy life!

 

[Steve Wood]

yeah, every night when I count sheep as I try to go to sleep.