Dyno disappointment!!

WhiteDevil · May 23, 2007

Also if the base tune sucks then it will run ****ty cold. But once it gets into closed loop(adaptive control) that can pick up the slack in the ****ty tune and allow it to run better.

gcomfx.com · May 24, 2007

WhiteDevil said:
Also if the base tune sucks then it will run ****ty cold. But once it gets into closed loop(adaptive control) that can pick up the slack in the ****ty tune and allow it to run better.

No kidding. Don "mail ordered" me a chip and was closer than these guys and he's never seen my car! The chip is in open loop too. (until we get the final chip)

'94ChickStang · Jun 5, 2007

another update

that's right....my car is still not done. It's a month in a half in the shop.

If you've been following, the cold start problem is fixed so it's running well @ all temps...but now supposedly it has a "miss" below 2k RPM and runs "fairly well" above that. Any ideas?

thanks
-disappointed customer

Pokageek · Jun 5, 2007

coil?

Badazgt. · Jun 5, 2007

very interesting story.... sorry to hear however
u said u researched them well???
hope i dont run into the same thing when i get mine tuned

although i know my **** was put together right

final5-0 · Jun 5, 2007

I've been wondering about the outcome

You said it was running perfectly when you gave it to them.
They should make it right cause they did the work.

Six weeks to do h/c/i and burn a chip is just way too long.

Time to holler at em
or
Have your lawyer write them a wake up to reality and get busy letter

I just hate to see this kind of thing happen

Good Luck with it

Grady

cjones · Jun 6, 2007

'94ChickStang said:
that's right....my car is still not done. It's a month in a half in the shop.

If you've been following, the cold start problem is fixed so it's running well @ all temps...but now supposedly it has a "miss" below 2k RPM and runs "fairly well" above that. Any ideas?

thanks
-disappointed customer

have them check for a vacuum leak
have them do a compression check, and a balance test (to see which cylinder is missing), then check ignition, perhaps they fouled a plug when it was running bad.

Venom351R · Jun 6, 2007

Id really be pissed by now if this happened to me. H/C/I can be done in a garage with basic tools on a weekend (taking your time) and a chip burn should take no more then a few hrs to work any bugs out. The fact that its taken them this long and still dont have the car running right is just not acceptable. It has to be something that was over looked or not hooked up right. It makes no sense that you bring the car in and it runs fine and they throw on H/C/I and a tune and now it runs like dog crap.

95gtdude · Jun 6, 2007

Yeah I'd pi$$ed off too! I'd definatly have a huge fit if they kept my car for a month and a half and not fixed anything. although I'm still having issues with my top end swap but at least my car is driveable right now.

nmcgrawj · Jun 6, 2007

final5-0 said:
Have your lawyer write them a wake up to reality and get busy letter

I just hate to see this kind of thing happen

Good Luck with it

Grady

that gets A LOT of places up and running and then all of a sudden u have your car back and all is well. Like everyone is saying, there's no excuse. There is only so many things it can be so if they have had it this long, obviously their only workin on it like 2 minutes a day

If i can do a h/c/i upgrade in a couple days as a complete ROOKIE to 5.0's or engines in general, then an experienced shop with mechanics should be a one to two day ordeal. Especially with all the tools right in front of u.

Pokageek · Jun 6, 2007

So maybe they have your money or are just setting it aside to work on it a little while each day to make money on other cars getting them in and out?..

WhiteDevil · Jun 6, 2007

This is just nuts. Its such a basic swap. I did mine in a weekend. And it still ran pretty solid on the stock comp for a few months until i got my tweecer.

lietuvis91 · Jun 7, 2007

did you ever think that the maf may be too big.... 95mm seems HUGE for an NA car.

'94ChickStang · Jun 7, 2007

Pokageek said:
So maybe they have your money or are just setting it aside to work on it a little while each day to make money on other cars getting them in and out?..

the latter is correct, they have none of my $$$ yet.

'94ChickStang · Jun 7, 2007

lietuvis91 said:
did you ever think that the maf may be too big.... 95mm seems HUGE for an NA car.

to my understanding it shouldn't create any issues. Pro M told me it's essentially the same piece as the old 80mm...I really don't know though

Grn92LX · Jun 7, 2007

lietuvis91 said:
did you ever think that the maf may be too big.... 95mm seems HUGE for an NA car.

Its not at all "too big".

'94ChickStang · Jun 27, 2007

Update on HCI nightmare

Ok, I was just told the car was done (for the second time)

The mechanic tore it down and did it over again. He said the misfire below 2k he said was due to the valves hanging open in the #1 and #4 cylinders creating compression loss...150 psi, where all the others were 180 psi. He adjusted the rockers and said that issue is gone but the rr's are still a little noisy, I think that's normal though??

Either way I don't trust it until I get there tomorrow!!!

He also dyno'd it again on a hot day and it put down 289 rwhp/318 rwtq, which leads me to believe it's better but maybe not all the way fixed or optimally tuned. That was with 12:1 AF and 13* initial timing. He also pulled it to 6k this time...

thanks for the support all

Grn92LX · Jun 27, 2007

Lean it out to 12.8-13.0 and add another 4-5* of timing.

rj95svt · Jun 27, 2007

WOW what a nightmare! I hope they got it all fixed correctly this time. I agree with grn92lx about the A/F! It's hard to say on the timing without seeing what the tuner is commanding in the timing tables.

'94ChickStang · Jun 27, 2007

I figured it should be 13:1 or so but he said he was worried about detonation @ higher temps with it that lean....and I dunno squat about timimg but 13-14* seemed to be what I remembered people running.

I may just get the car the hell outta there and go get someone else to Dyno it to where I want it to be

Dyno disappointment!!

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