Dyno disappointment!!

That does seem low. Previous owner of my z28 claimed it dynoed at 270 to the wheels with intake elbow, cold air intake, no cat, slp loudmouth and dyno tune. 1995 model also. No LS1.

I think my GT would dyno at like 180. Its a dog.

340rwtq is pretty typical for a 302's torque. That is around what I see for the custom cam 302's...

Oh and the 65mm TB is not the reason for the lower numbers. That would be one of the very last things I would check.

final5-0 said:

What does Ed recommend for rr's these days
and
Did you go ped or stud

Grady

Click to expand...

Typically the 1.6 Scorpions for most combos...

Here is the simple way to say what I think happened

They had those issues you just said and failed to clean them all up
sooooo
You bet ... It hosed up the way it ran and the way it measured up on the dyno.

Looks like you are now getting somewhere

Grady

I think it is great that they found the issues..

I had very little time in my last reply above so I had to be brief.

I got more time now

No ... It is doubtful any of your sensors just went bad

however ... It is possible that some of them may have been
damaged if during the project .......
reasonable precautions were not followed.

O2's can be damaged if you knock or bang them around.

I mean ... all that kind of stuff needs to be treated with care.

You tear off the intake, heads, and front of the motor with an
upgrade of that nature.

Just think of all the hoses, wires, gaskets and the like that need
to be undone and put back together.... CORRECTLY

They had some of that stuff not like it should be
and
You got the opportunity to see the results of it

IMHO ... anybody can take off and put back on parts
but
One has gotta pay attention to the little details
if
One is gonna have an outcome that is successful

They are now gonna have go back and deal with that lack of
attention to details and you would be wise to not take
delivery of your car until you are satisfied they make
EVERYTHING as it should be ... if you ask me.

For your sake ... I'm glad for you
as
It appears that they stand behind their work

I look forward to your new and improved dyno results

O Yeah ... Ask them what happens if some drivability issue crops up
over the next few days

I mean ... I hope it don't :Word:
but ...
Its good to be prepared ... just in case ... don't ya know

Grady

just make sure you pay with a credit card. so you can dispute the charges if you have to.

vacuum leaks and hose routed wrong can definitely cause O2 sensor codes. you should not have to pay for the O2 sensors or the ACT sensor(can cause a code if installed wrong).

good luck, hope fixing the vacuum hoses works.


also, besides the BBB you can contact the BAR (Bureau of Automotive Repair) since you're in California

'94ChickStang said:

well the tech says now it's idling terrible when the engine is cold and running great once it's warmed up....I can't say I have a clue what would cause that.

I hope I can have my car running properly (& putting down larger #'s) for the Holiday weekend!!

Click to expand...

2 things that could cause that are:

IAC-Intake Air Temp sensor

ECT-Engine coolant Temp sensor

Sheesh... Do these folks know what they are doing? I mean are they coming back to you stumped?

If an 18yr old with a tweecer can get a supercharged h/c/i car with 42 lb/hr injectors and what not tuned up and running well....then they should at least be able to get a drivable tune on it since they're professionals..........and trust me people...I'm no genius.

which leads me to believe that your problem is definitely something mechanical. Probably something as simple as them forgetting to hook something up.......If it's not running well until it's warmed up then I'd agree with cjones.

also, what is the idle doing. Surging?