Engine/Transmission (1998.5 - 2002) Turbo suggestions

[JMcKee]

Well when i bought the mach 4s a few months ago i knew that a bigger charger would be on the plate i just want to make the right decision. Truck is a daily driver and i do tow heavy occasionaly (but more often a heavy foot around town). I have had a couple suggestions for the Hi Tech 62 with the 14 cm housing. What do you guys think would work good with my current setup?

 

[fox]

Twins!!!

I tried the SPS 62 and it would not tow with the box off without 1400-1500 egt's.

 

[DFairhurst]

i have a hi tech 64/14 it works well i tow 10k trailer in the summer alot thats when it shines but its big so u have to put the fuel to it talk to the guys at hi tech great guys and they will help you with the set up that works for u. i love mine.

 

[JMachemer]

I have the Mach 4's and a PS62. I would not recommend towing much weight with this combo. - any more than 5-6K lbs and the egt gauge is burri'd. I do love this set up for my every weekend driver. I have seen right around 58 lbs of boost

I know i might step on some toes by including this, but i have not seen any other truck put down higher #s than mine on a dyno with Mach 4's and another turbo(s). I thought the SPS62 & twin trucks would have some advantage over the PS62.

Anyone know of a Mach 4 injector truck that has put down more than 562 WHP and 1162 WFT# of torque? Even on a spray system?



I hope everyone has a nice Thanksgiving

 

[icman95]

I have some experience here-good and bad. When I tow it's pretty heavy-around 21500 lbs gross. I wanted bigger injectors, so went with a set of 110hp from DDP. Also put in a hybrid turbo from Hi-Tech. This was a mistake! The sticks were too big and pumped too much fuel for towing. My egts were no good. Also, the bigger turbo didn't spool up fast enough for all that fuel. It would sing at higher rpms, but getting on the highway pulling my trailer was leaving a dark cloud of smoke behind me that blocked out the sun.



I know the bigger sticks are great for around town when not towing, but a smaller set will work better for towing. I changed them out for a set of DDP 75's and it's much better now. While I've learned to drive with the hybrid turbo, I had considered putting a stock one back on because it spools faster. What I've done is moved my torque curve higher up in the rpm range. Once I learned to drive it differently, I was happy, but I don't think I really needed to put a new turbo on for towing purposes. When towing heavy, less is more. The 75's with the Smarty and the TST box are just fine. The setup can pull my trailer at speeds far in excess of what's legal or reasonable. As far as for around town, the bigger sticks would be more fun, but you'll lose some flexibility in towing.