[SATINSTEEL1LE]

Originally Posted by clg82

How much boost are you running?

Warm days I see 14.5psi, cooler days I see it just touch 15psi. 90mm upper stock lower and only have a normal Rotofab thats it. Nothing else. No headers nothing.

[SATINSTEEL1LE]

Same log I posted but with more info including boost. Top line on the right you can see boost at the same RPM for that same log.

[clg82]

Originally Posted by SATINSTEEL1LE

Warm days I see 14.5psi, cooler days I see it just touch 15psi. 90mm upper stock lower and only have a normal Rotofab thats it. Nothing else. No headers nothing.

I have your exact same setup and am seeing those same numbers. And I don’t have a JMS adder. Did someone up sell you on needing one or did you really need it?

[SATINSTEEL1LE]

Originally Posted by clg82

I have your exact same setup and am seeing those same numbers. And I don’t have a JMS adder. Did someone up sell you on needing one or did you really need it?

No I wasnt upsold. This was the last log from the dyno and Ted stopped me right here. You can see here the low side is dropping (down to 65 from commanded 76). Not horribly, but its starting. And as Ted said this might be ok for a few second dyno pull, but a long highway pull or at the track in not ideal conditions, KABOOM.

As I said this might be OK for certain shops, but Ted said NO DICE. Get the JMS and we will continue. So I ordered it from him and that fixed this before it became an issue. Not all cars are the same, so you might not need one. But if you dont have one I bet you are on the edge. As I said before, lets see a log showing your low side and high side at least.

[SATINSTEEL1LE]

Originally Posted by SATINSTEEL1LE

No I wasnt upsold. This was the last log from the dyno and Ted stopped me right here. You can see here the low side is dropping (down to 65 from commanded 76). Not horribly, but its starting. And as Ted said this might be ok for a few second dyno pull, but a long highway pull or at the track in not ideal conditions, KABOOM.

As I said this might be OK for certain shops, but Ted said NO DICE. Get the JMS and we will continue. So I ordered it from him and that fixed this before it became an issue. Not all cars are the same, so you might not need one. But if you dont have one I bet you are on the edge. As I said before, lets see a log showing your low side and high side at least.

Oh and ambient air temp for this pull was 93*. So you can see if it was cooler out, better "boost weather", this could have gotten far worse.

To Ted's credit he knows what works, what doesnt and isnt going to sugar coat it to make you happy, paying customer or not.

[SATINSTEEL1LE]

This was the very next pull a week and a half later with the same fuel in the tank on the same dyno after the JMS was installed. All better. 90* ambient.

[JANNETTYRACING]

Originally Posted by KingLT1

It isn't a blanket statement at all. Post a 60-130 time of you 670whp car with the 125whp flex package. I bet they are low 7's full weight. Which supports my point that dinos read different and cross comparing is pointless without a baseline

Here you go.

[2023_ZL1-AUTO]

Just to add in, Ted knows his STUFF ! I spoke to him today, and he has set me straight on what I wanted, what I was doing WRONG, and what I actually had to do to accomplish my goal. I will be moving forward with his recommended modifications! I'll start with the 125 Package, but slightly modified to accommodate the Terminator Package later down the road. So, no wasted money on parts that need replaced when I go with the additional Terminator mods. The biggest swap was the 1 7/8" headers to 2" headers. This sets me up ready for the Terminator add-ons down the road, Cam and Magnuson 2650 LT4 Supercharger!

[KingLT1]

Originally Posted by JANNETTYRACING

Here you go.

Good time. Is that a full weight car on 20" wheels?

[JANNETTYRACING]

Originally Posted by KingLT1

Good time. Is that a full weight car on 20" wheels?

Full weight drives to the track 18 inch drag radials I believe.

Runs on E60

[KingLT1]

Originally Posted by JANNETTYRACING

Full weight drives to the track 18 inch drag radials I believe.

Runs on E60

Makes sense...1.4's would be a stretch for a 20" wheel.

What track was this at?

And fwiw I am not saying your 125 flex fuel package doesn't make power. All my stuff runs Ethanol.

I am saying all dynos read different. I have seen cars trap higher then that making on less a Dyno and vice versa.

[JANNETTYRACING]

Originally Posted by KingLT1

Makes sense...1.4's would be a stretch for a 20" wheel.

What track was this at?

And fwiw I am not saying your 125 flex fuel package doesn't make power. All my stuff runs Ethanol.

I am saying all dynos ready different. I have seen cars trap higher then that with less power and lower with more power.

I agree but the track is always correct LOL.

The discussion is about what the fuel system can handle and I agree some dynos read accurate some read low and some read high but generally they are all pretty close providing they are calibrated.

My superflow is super accurate and back up with track numbers for nearly 20 years.

700 RWHP is a realistic number on the LT4 fuel system with a JMS.

Ted.