Lost 20 whp with new exhaust and flex fuel kit

[the_wilferine]

For a dynojet, those are some incredibly low numbers…….

I know right, with the hardware I’ve got I would have expected more like 500bhp based on what I’ve seen online. One of my friends did a stock run on the same dyno and got the same numbers as me when mine was stock.

I’ve got a custom tune on my wish list but it’ll likely not be until next year when I can get one.

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[razorlab]

I know right, with the hardware I’ve got I would have expected more like 500bhp based on what I’ve seen online. One of my friends did a stock run on the same dyno and got the same numbers as me when mine was stock.

I’ve got a custom tune on my wish list but it’ll likely not be until next year when I can get one.

Did you check for boost leaks? It should easily do over 400 on 93 with Stage 2. Not 500 in any reality but for sure over 400.

 

[Axix23]

Maybe the dyno’s calibration is off?

 

[gixxersixxerman]

Did y’all switch to winterized fuel there? I do know it’s less efficient but idk if it’s 20hp less efficienT.

 

[Sub-MkV]

This dynojet has SAE smoothing vs STD. I like how dynojet can take both into account. The majority of the nicer numbers floating around is on Dynojets with STD smoothing.

 

[razorlab]

This dynojet has SAE smoothing vs STD. I like how dynojet can take both into account. The majority of the nicer numbers floating around is on Dynojets with STD smoothing.

CF and smoothing are two different things. Correction factor is SAE, STD or custom, smoothing is applied to the plots and is totally independent of CF.

 

[Sub-MkV]

CF and smoothing are two different things. Correction factor is SAE, STD or custom, smoothing is applied to the plots and is totally independent of CF.

CF and smoothing are two different things. Correction factor is SAE, STD or custom, smoothing is applied to the plots and is totally independent of CF.

I know this and I should've been more clear about that. Good catch

 

[devnull]

I think a lot of people were having issues with the stage 2 1.1 customrom maps. They have 1.3 out and it made a big difference in my car.

something to probably look at.

 

[the_wilferine]

I think a lot of people were having issues with the stage 2 1.1 customrom maps. They have 1.3 out and it made a big difference in my car.

something to probably look at.

I’m only seeing 1.2 as the latest which is what I used

 

[the_wilferine]

Did you check for boost leaks? It should easily do over 400 on 93 with Stage 2. Not 500 in any reality but for sure over 400.

I haven’t, I’m going to be checking the downpipe to see if the cat’s melted, I have been running some aggressive burbles recently

 

[the_wilferine]

Did y’all switch to winterized fuel there? I do know it’s less efficient but idk if it’s 20hp less efficienT.

I have no idea tbh, wouldn’t know where to look to check either

 

[the_wilferine]

Did you check for boost leaks? It should easily do over 400 on 93 with Stage 2. Not 500 in any reality but for sure over 400.

So, boost leaks you say…

Can’t believe it took so long to spot this because I’d never have thought about it but turns out the 1/8th NPT bungs in the chargepipe have fallen out! They were there when I installed it and for the previous dyno session but at some point around July/August they’ve gone missing!

Got another couple on order.

 

[Loco38SUP]

So, boost leaks you say…

Can’t believe it took so long to spot this because I’d never have thought about it but turns out the 1/8th NPT bungs in the chargepipe have fallen out! They were there when I installed it and for the previous dyno session but at some point around July/August they’ve gone missing!

Got another couple on order.

Looks like you forgot to connect that 200 shot.

-RJM

 

[the_wilferine]

Looks like you forgot to connect that 200 shot.

-RJM

I didn’t want to blow the welds on the intake

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