TVS 1900 09 Avalanche by AMS
TVS 1900 09 Avalanche by AMS 2009 LTZ with 5.3 / 6L80E
The truck is a very nice daily driver, but was lacking a few things so the goal was to increase HP/TQ as well as appearance/handling while not compromising drivability or the ride. We chose the Magnuson TVS route combined with some suspension upgrades and the customer is more then pleased with the results
TVS 1900 / 6.6 psi
K&N drop in filter
LS2 injectors
stock fuel pump
NGK TR6 plugs
MSD wires
SLP / Eibach Sport suspension which is about a 2" drop
Hellwig front and rear sway bars
SLP PowerFlo catback
Base Line
250 rwhp / 264 rwtq on our MD
Post Dyno w/ AMS Tune
371 rwhp / 354 rwtq on our MD
prior to alignment
The truck is a very nice daily driver, but was lacking a few things so the goal was to increase HP/TQ as well as appearance/handling while not compromising drivability or the ride. We chose the Magnuson TVS route combined with some suspension upgrades and the customer is more then pleased with the results
TVS 1900 / 6.6 psi
K&N drop in filter
LS2 injectors
stock fuel pump
NGK TR6 plugs
MSD wires
SLP / Eibach Sport suspension which is about a 2" drop
Hellwig front and rear sway bars
SLP PowerFlo catback
Base Line
250 rwhp / 264 rwtq on our MD
Post Dyno w/ AMS Tune
371 rwhp / 354 rwtq on our MD
prior to alignment
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yes..the TQ was very important being the truck is so heavy. thanks
thanks
let me know if you need anything
stock cam
stock manifolds and cats
no it was not dropping power yet at 5800ish, but we were were not looking for a big peak#. We were looking for more average power and decided no reason to turn it higher. We might just turn it a little higher the next time on the dyno and see how it works. 6000ish
I'm already working on a couple more upgrades.
- pulley swap
- custom HE reservoir upgrade ( in 2nd spare battery location )
- brake upgrade ( C6 Z or Baer ).
The customer just loves the truck, but now wants some stopping power.
We were hoping for 8 psi, but only hit 6.6 psi so now we will shoot for a little more power with the additional cooling.
This will be later summer after we get his 4th Gen SS upgrades done in Aug.
thanks
let me know if you need anything
stock manifolds and cats
no it was not dropping power yet at 5800ish, but we were were not looking for a big peak#. We were looking for more average power and decided no reason to turn it higher. We might just turn it a little higher the next time on the dyno and see how it works. 6000ish
I'm already working on a couple more upgrades.
- pulley swap
- custom HE reservoir upgrade ( in 2nd spare battery location )
- brake upgrade ( C6 Z or Baer ).
The customer just loves the truck, but now wants some stopping power.
We were hoping for 8 psi, but only hit 6.6 psi so now we will shoot for a little more power with the additional cooling.
This will be later summer after we get his 4th Gen SS upgrades done in Aug.
i totally understand the avg power statement. it's interesting to see how the stock cam's curve actually changed so much with the addition of fi. are you guys using stock valvesprings?
11 Second Club
Joined: Dec 2004
Posts: 196
Likes: 0
From: columbus, ohio
Am I the only one that would be more than dissappointment with those numbers? If I spent well over 5k on a blower setup and it only picked up 100 RWHP I'd be pissed.
The blower may have picked up less considering you did exhaust, tune and a filter.
The blower may have picked up less considering you did exhaust, tune and a filter.
it picked up more then 100 rwhp if you look at the peaks and it was still pulling hard
The catback was worth 5 maybe 10 rwhp tops. The drop in filter is part of the Magnuson kit and when most would do a CAI I chose the stock air box for this DD. I would bet that the filter is worth min as well.
I also want to mention this isn't a bogus glory cool down # either and done hot, on a hot humid day in a hot dyno room. This way the truck performs as it should out on the road.
thanks everyone for the positive feedback
TECH Apprentice
Joined: Mar 2007
Posts: 362
Likes: 0
From: Twin Cities, MN
Yes, I think you are the only one.
11 Second Club
Joined: Dec 2004
Posts: 196
Likes: 0
From: columbus, ohio
it's a 5.3 / 6L80E, 6.6 psi , steel driveshaft, big tire, stock manifolds, stock cats, stock air box, hot day, hot run on a MD dyno with a DD truck. We are happy with and the customer is super happy with it which is most important.
sorry it doesn't please you, but you have now shared your feedback and I kindly ask if you can move onto another thread
thanks
it's cool. at what point would you consider swapping to some pac 1218s or ls6 springs? just curious if it would be due to more power (from something like full exhaust), more rpm, or more psi. or a combo of the 3...?