Going from 12psi -> 28psi Anything that I should do?

[KadieTSi]

Okay so my basic idea with my build, I started with 10psi through my wastegate spring before I put on my MBC. I've since raised it to 12.

I have many people who say to me how I'm hardly even seeing the potential of my build, well I say that this way whenever I get bored and want more power I just raise my boost a bit more.. Otherwise if I shoot straight to the limit of my build and if I get bored - I'll have to spend a bunch of money to build my motor right away rather than simply turning up the boost.

Anyways I have a new spring coming which will put my wastegate spring pressure to 15 pounds.

My brother arranged through a friend to get my car on a dyno for free to see the potential of the build - so we'll be pushing near the limits of my build.

We're going to start around 20psi and work our way up until we feel its time to "stop while we're ahead"

My brother says we should shoot for a run at around 28psi as he said he doesn't like to double wastegate spring pressure.

I'm just wondering if theres anything else that I'm missing before I jump from 12/15psi all the way to 28psi.

I have literally near to no boost leak, even tiny ones.. I have heavy duty multi-layer silicone couplers, and t-bolt clamps everywhere.

Running E85 on 1100cc injectors tuned on DSMLink v3 by me.
Mitsubishi TD06 20g.. Tial 38mm Wastegate, Tial Q bov, etc etc - its all in my profile.

Just wondering if I should prepare anything else.
I'll be having to drive it to the dyno and back (total of 3 hours of driving) so I'm hoping it all goes smooth.

Let me know if you have any suggestions - thank you

 

[VETTE_50_TH]

You should only run 1.5 times the spring amount.

 

[DSM_PWR]

Looks like your ready to go by checking all boost leaks, etc..

As long as youve got all supporting mods, should go smoothly

 

[KadieTSi]

You should only run 1.5 times the spring amount.

Really?
I searched on it and people were saying that doing more than double the spring amount can cause it to start boosting inaccurately.

 

[VETTE_50_TH]

I ran an 8 pound spring in my tial a while ago and i was running 12 psi and it would hit 13-14 then drop to 12. So, yea 1.5 times. I think even tial says not to go over 1.5 times.

 

[hoyboi]

yea man i would only go 1.5 above as VETTE 50 TH says or it will start to creap on you

 

[KadieTSi]

Alright well I suppose I'll order another spring, should be able to get a third to put into it to run 20psi off the spring

 

[jrohner]

Do a BLT at 30psi to make sure the hoses are good and the clamps are tight enough for high boost.

Keep an eye on your logger during the pulls and you should be fine. Do some street tuning at higher boost first if you can.

 

[KadieTSi]

Do a BLT at 30psi to make sure the hoses are good and the clamps are tight enough for high boost.

Keep an eye on your logger during the pulls and you should be fine. Do some street tuning at higher boost first if you can.

Boost leak testing holds tight all the way to around 37 which is the highest i've tested it to. slight leak from my boost leak tester itself but other then that it seems to be pretty good.

I suppose I'll go ahead and tune it at around 20-23psi before taking it there so the tune is already mostly set up with just needing tweaking here and there on it.

 

[jrohner]

Make sure your spark plugs are gapped pretty tight too; I run about .025 at most. It becomes very important when you approach 30psi. Mine gets really picky at around 28psi.

 

[KadieTSi]

I have the BRP7ES NGK plugs gapped at .28 - should i re-gap to .25?

 

[jrohner]

I would.

 

[KadieTSi]

Alrighty, will do