2017 c7z ported blower with no power gain

Lt4 tuners please chime in lol
2017 c7z bolt on made 560/630tq
Added kong blower, 103mm tb and 2.3 upper
No matter what fuel 11.8-12.6
No matter 10*-16* advance
Changed plugs
Throttle is not closing and getting all commanded timing
It will not make over 572/685tq
Also note it has dropped almost a full second in 60-130 on a draggy so definitely gained a decent amount of power. But for some reason it will not make a decent pull on the dyno. Any input would be great at this point. Never had this issue with any gen v
Thanks
I can post tune tomorrow but figured I'd post maybe I've missed something

Attachment 100899

best to post tune and log so we can see whats going on

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Originally Posted by SultanHassanMasTuning

best to post tune and log so we can see whats going on

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Attachment 100904Attachment 100904

Lot of knock retard. And not much timing. May need more octane like a mixture of Boostane. I had to run it in mine even when stock. Also your manifold air temp is pretty high. Might need better cooling with high ambient temps. I would log your mixture in Lambda and check to be sure it's close to commanded. Do you have cats? They could be the culprit.

^ yes i would recheck everything, even gapping your plugs properly

It's either really heat soaked or the intercooler coolant is not cycling. It's not going to make good power with 150+ manifold air temps. Recheck there is no air in the intercooler system and the pump is running 20 seconds or so after start up.

Quote:

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Originally Posted by 32vape

It's either really heat soaked or the intercooler coolant is not cycling. It's not going to make good power with 150+ manifold air temps. Recheck there is no air in the intercooler system and the pump is running 20 seconds or so after start up.

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So removed the pressure limits and re bled the intercooler and on the street there was a noticeable difference. More solid boost curve and no kr.